Facemask

  Dr. Bruce Spiess, a UF Health anesthesiologist, has designed a mask using a material that is in abundant supply in hospitals across the United States and the world. It is generally called “surgical wrap,” and is made by Owens Minor. When two layers of the material are put together, the material rating becomes N99 which is higher protection that the N95 masks.

 Spiess worked with infection control staff to ensure that the design is as safe as possible, and is also easy to construct. 

Dr. Bruce Spiess

Dr. Bruce Spiess

 Members of the Gainesville community are lined up to start sewing masks out of this material and supply them to local hospitals and first responders.

 According to Spiess, it is most likely that the masks can be used many times because the material can go through the autoclave for sterilization.  

Face Mask

Dr. Bruce Spiess, a UF Health anesthesiologist, has designed a mask using a material that is in abundant supply in hospitals across the United States and the world.

 Spiess said the idea came to him in the middle of the night when he woke up and realized that the material could be for more than keeping medical tools and equipment sterile. 

 “The amount of MacGyverism going on is phenominal,” Spiess said about inventions coming forward to help combat COVID-19.

Call 352/519-1001 or email to GNVCovidMasks@gmail.com. or visit the website for more information:

gnvcovidmasks.org.

 

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(172) comments

Guest

Can you really comfortably move air through that outer wrap material? I've never tried, but my gut feeling after years of using it as a surgeon is that it would be difficult to move air through and thus I assume much of the air movement would go around.

Guest

I’ve been making these masks for local nurses, ARNP’s and physicians. These are a favorite! I added a piece of sham wow just inside the nose piece to keep your glasses from fogging up. I have also added a chin tuck and given this mask a very tight seal. This is a great mask when done right.

Guest

*Does it make sense to donate surgical grade disposable boxes(white/blue) of masks to hospital staff (front desk, janitors, security, etc) at this point. I'm a nursing student wanting to help local hospital staff who interact and screen patients and random people at hospitals. Seems like great there are great minds here who know about masks and the size of vitis and protection. Please advice ! Thanks

Guest

Yes!

Guest

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Guest

I’d consider donating to either an urgent care or a primary care office covid test ready that stayed open to serve urgent patients and help lessen the burden on hospitals. They often can’t afford to bid against hospital systems or pay price gouged prices. They are being forgotten about, And can’t get supplies but it’s crucial they keep non-emergent patients out of the hospital.

Guest

Do you still have them? For primary care office

Guest

Died it make sense to donate boxrd of disposable (blue/white) surgical quality masks to front desk, janitor, security staff at this point ??? Need feedback asap (Nursing Student wanting to help local hospitals staff) sos

Guest

Can this flat polypropylene (PP) material be used as a 1 or 2 layer sandwich between cloth or knitted cloth? Insert PP after sewing, or the last seam?

Guest

I am a professional fashion designer and handyman after a LOT of research on the mask(s) and the materials used in different mask the best protection in my opinion to get full protection would be to have a layer of cotton, a layer of polypropylene, this is a strong factor that people are missing and it is a layer of active charcoal powder on fabric in the Middle then another layer of polypropylene then a another layer of cotton for the skin. This will give you that extra protection and that 5 layer protection system used in the masks they sell on the market in addition it will give the front line medical worker a better chance of staying in the fight against covid.

Guest

As a medical product designer actively working on this problem. Yes this can work but only provides the level of protection as a Level I mask, Level II or higher would require a melt-blown material capable of blocking >90% of 0.3 microns. The spun-bound materials that these are sheets/drapes use has been tested to block 90% of 0.33 micron particulate, in its 3-ply state. The COVID-19 Virus is 0.17 microns. Also active charcoal filters do nothing to stop this or many other, as well as cotton as an organic compound is a breading ground for viruses and bacterial with the moisture supplied from the breath. Absolutely the last possible choice especially for the Sealing surface again the face. If you do not get a good seal around the face, studies show 95% of the airflow escapes through the seal, because of the restrictions caused by the filter materials

Thank you for the efforts, but way too many people outside this discipline are adding fuel to the fire by not knowing the science and material attributes. Many of the current DIY solutions are creating sense of false security and actually spreading the virus more.

Best actual DIY solution out there is the use of HEPA rated vacuum bags as the material. With proper fitment this can offer the same protection as the N95. Because it is the exact materials used in the mask currently.

Guest

Would you be able to breathe thru all those layers?

Guest

I believe the HEPA vacuum bags would offer even more protection. However, my concern is they may be to restrictive in which case the air goes around.

Guest

As far as the suggestion below to use HEPA vacuum bags or filters this is not a good idea as these filters are made from minute glass particles that can be inhaled into the lungs even through the layer against the face and cause lung issues. This is in reply to the below guest’s suggestion.

Guest

I agree with you on this one, particularly because the fabric suggested here is not machine washable. But I have yet to find ones on the market, at least in Canada, that are cotton with the polypropylene in between.

Guest

Don't know if anyone has looked into using high intensity UV light to disinfect a lot of the masks in use today. I know some hospitals have a robotic UV cleaner for operating rooms and such.

Guest

My hospital is considering using it! I’m quite impressed with the way they/we’re responding!!

Guest

I think we should use Ozone. Get a dishwasher and hook an industrial Ozone machine, line the mask up let her go.

cracker

Normal N95s polypropylene can be degraded by UV

Guest

How about plain old heat? I've read that 133 degrees kill the virus. So an oven at a higher temp would work. How about a microwave or a dryer?

Guest

I saw that for airplanes as well.

Guest

UNMC Omaha is using it

Guest

That damages the mask. :(

Guest

UV degrades N95 mask. Studies have been done

Guest

I'm seeing conflicting advise regarding UV sterilization. U Tenn and 3M report. OK. Could you post the studies for UV degredation of N95's? I know places using UV sterilization for their doctors. Thank you.

Guest

Our hospital has advised against it because they don't know how the UV light affects the quality of the mask since it has not been tested.

Guest

Well the uv breaks down the integrity of the mask so not good idea

Guest

Yes. We are using the UV cleaner after doing research, checking with manufacturer, and testing.

Guest

They are looking into vaporized Hydrogen Peroxide. UV won’t penetrate the multiple layers of the masks. The problem though is this still only slightly prolongs the life. Filters work by getting plugged so the longer you wear it the harder it is to breath through it. Especially when it has to filter 95% of particulate at 0.3 microns.

Guest

That’s what I’ve been thinking. How about the ionizing/ozone producing machines? Some have UV capabilities as well. Would these work? They’ve worked really well for me over the past 30 years.

Guest

They are saying 30 seconds of steam heat

Guest

Our hospital is reusing N95 masks in this fashion. Masked are assigned and labeled to each individual and their department, collected at the end of the day, placed in a special room outfitted with the UV disinfection “robot” and additional reflective surfaces to disperse the UV light. Then the masks ar collected and processed through our Sterad gas sterilization system for two cycles. When you return to work the next day, there is a white paper sack with your name on it with a decontaminated N95 mask. We are a small/medium size hospital. 14 ORs, 2 CVORs, 6 Cath labs, 2 IR suites and 2 Hybrid radiology/surgery suites, and 20 CV-ICU, 20 neuro ICU, and 20 medical ICUs. One of those ICU is now our Covid Unit and a wing of the hospital is designated as a step down unit.

Guest

My husband works in a sterile processing department. He says the drape material is not the same as the outer wrap material. Can anyone verify? I ask because he is currently out of work so has no access but we have some drapes at home.

Guest

The drape material is not the same as the outer wrap material we use for trays which is the material referenced in this post. The outer wrap material is sterilized. Hope this helps.

OR RN Guest

Overwrap is somewhat porous to allow steam into the package being sterilized where draping materials are not porous so they isolate out the sterile field.

Eugene P Corrigan, jr.

DIY instructions for tent-shaped COVID-19 mask - for volunteers, non-infevtious hospital patients, et al

Xerxes

The tent-shape - with the seam right down the front & middle - seems like a terrible idea. More than any other build you're relying on the tightness of the stitching to keep up the filtration.

Lynne

I wonder if cutting this the size of a home made mask and putting it in the pocket would work?

Guest

These wraps are only validated for single use by the manufacturer. And no validation for washing. This would have to be validated prior to multiple uses. If that could happen then it's a great idea

Guest

Lots of HCP out here with no masks at all. While peer reviewed blinded and controlled studies would be great, we don't have time for that.

Guest

Single-use masks are also validated for one use, but hospitals are making their workers use the sabe one for days. We are not at a point where we can afford to wait for “validation.” The article is specific about using an autoclave to sterilize the masks made out of this material, no mention of washing, since it would further degrade its filtering quality. The CDC has gone as far as saying that if hospitals are out of masks, they can use bandanas or scarves for protection, there is zero validation on their filtering qualities. A mask made with the material mentioned in this article is leagues better than a bandana. Sorry, but You can save your comment for when we have the luxury to wait for scientific evidence.

Guest

Spot on no time for verification

Guest

Amen!!! I’ll take one of these any day without verification!!

Guest

There is no mask shortage, there is a bottleneck in sales b/c Amazon keeps closing sellers' accounts b/c they're charging higher than normal prices due to the demand spike. People are shaming the sellers online and calling for their prosecution b/c they're upset buyers may have to forgo their Starbucks money to pay for them, even though the buyers are willing. Nobody trusts the market anymore to incentivize people to leave their current jobs to help out in this crisis. Profit is considered evil, so millions of people will do without masks, but hey, they saved you your coffee money.

Guest

Hospitals aren't able to get more from the major suppliers/manufacturers. Health care systems are not buying masks from some hack on Amazon. That's just the local hoarders doing that

Guest

Hospitals do not buy their products from Amazon. There is a shortage. 3M can’t meet demand. If you don’t know what you’re talking about, abstains from spreading ignorant comments.

ERDoc

Price gouging is illegal and forgeries being sold. People should be selling at cost or minimum markup during this pandemic and to hospitals or doctors only

Guest

Hospitals are not buying their masks from

Amazon!🤦🏼‍♀️

Guest

Someone should delete the post from the shameless profiteer who contributed to the shortage by buying or stealing product in February before most of us had an inkling this was coming.

Man with functioning Brain

You have no idea what you’re talking about .. please go back to you basement

Guest

Your an idiot. Do you really think Dr and nurses would be dying if we could get masks?

Guest

😡not sure why you think people's lives are worth your few dollars profit on a mask

Guest

You sir are an idiot

Guest

Seriously?? There is a global shortage. The Amazon sellers masks are not available right now - they have dates in the future. Further, healthcare facilities do not purchase their supplies from Amazon.

Yes, there is a global shortage.

Guest

They are gouging and that is wrong...a profit is ok...but not the profits these sellers are selling the masks and other products for. Yes they should be prosecuted

Guest

Really? Help or move on please

Guest

I’d say paying $60 for a SINGLE N95 mask with a breathing valve (this more conducive to stressed breathing due to working conditions) that I normally pay $2.50 for a pack of 10 is price gouging and the seller SHOULD be removed from transacting at this price. I don’t care how wonderful capitalism is, this is predatory and usurious. Get over it. We’re focused on getting scheisse out there not maximizing profits.

Guest

Small clinics can’t afford those prices! Sellers SHOULD be ashamed. It’s a national crisis and all they are thinking about is profit.

Guest

FALSE

Guest

I saw $37 for one mask a few days ago. You're defending that?

Guest I was told in the OR this material is thrown away so how can it be saved and gotten to the people eager and willing to see?

😊

KG RN

After it has been used to wrap sterile instrument trays, yes, typically it is discarded. Trays are wrapped in thsee multilayered wraps, to keep them sterile while on the shelf in OR instrument rooms. The wrappers are considered clean on the outside layers, and sterile on the inside layer once sterile processing completed. So, I would imagine the sheets would be usable for making masks before or after. We remove the wraps from the OR prior to the patient entering the surgical suite. Since elective surgeries are being cancelled, the "used" wraps will likely be less available, so I suspect they will used the wrappers as they are available direct from the mfg. I think this is brilliant!!

KA RDH

My only concern is they still must be single use, even if sterilized after. This due to the fact during sterilization if the wrap is not fully dry and you take it out autoclave, the wrap is damp and permiable. So My thought is if that occurred through it becoming damp from extended wear, is the provider safe? Based off rational thought great approach as it is probably more effective than many fabric masks people are making but they should still be single. It is paper and in my experience resteralizing just a second time causes the paper to break down leaving it brittle to touch so microscopicly I would presume break down as well. I know time is a issue and studies can not be done. I do think a research facility can execute this fairly quickly for preliminary results, just checking how effective in comparison and if change occurs after sterilization 1, 2, 3, 4, 5x. It's scary I see ppl making knitted masks, which has so many holes. Great gesture but not all people have the same background to understand risks. I still want to die about the bandana recomendation like we care a 3rd world country.

Guest

As an infection preventionist I have not really been able to get on board the cloth mask train except to cover & masks that are more appropriate. However, after reading this article I am willing to make masks out of surgical wrap. Since we are an ambulatory surgery center we are not doing many cases at all. We have a stockpile of this unused wrap available. I will be trying this tomorrow! They can be made easily and then sterilized in a steam Prevacid sterilizer and should not have breakdown. They could be at least used for a day....

Guest

It sell for $16 for 100 sheets of 24x24

Debbiep123

Where can I buy some?

Guest

Where?

Guest

What method of sterilizing was used?

Guest

Uv

Guest

The sterile wrap that the sterile processing departments uses to wrap it's trays for surgerywith. They made masks using that.

Guest

" According to Spiess, it is most likely that the masks can be used many times because the material can go through the autoclave for sterilization. "

Guest

In the article they said they run it through the autoclave.

Guest

Autoclave.

Guest

This surgical wrap is polypropylene, so is the 3M N95 mask. It can be sterilized a few ways but the fastest, cheapest, and most common method is steam sterilization, 270F

Guest

They put them through the same machine that sterilizes surgical tools

Guest

Usually an autoclave is used to sterilize equipment. Steam under pressure like a pressure cooker so it can kill even spores. The equipment is wrapped in this blue cloth like wrapping, then auto laced for 30 minutes. Hospitals have huge autoclave.

Guest

It’s sterilized by an autoclave (it’s a machine)

Guest

Steam autoclave

Guest

Steam is perfered use but this material can also be sterilized in hydrogen peroxide gas plasma.

Guest

Autoclave

Guest

Autoclaving

Guest

Why can’t UVC light be used to sterilize components.???

Guest

Uv light breaks down the matetial in N95 masks. Using 4 madks in totation and letting each dry out hanging up for 4 days does the trick. or heating it to 80 degrees for an hour.

OrMaybeI'mJustStoned

I was thinking the same. Why not put all those unused tanning beds to use?

Guest

I made a mask out of surgical wrap last week I believe it is H400. I was happy and amused to see this article. Thank you for sharing it. I have also seen where people use double-sided skin safe tape to improve the seal.

Guest

the article used the H 800

Guest

Novasterilis is a company in Ithaca, NY that sterilizes medical equipment. They have tested sterilizing surgical masks and N 95 for re-use. They are working with Cornell and the local hospitals for getting this process out there. 10,000 masks can be sterilized in a 2 hour period. Please contact them at 607-330-2772.

Guest

Does anyone know how to get in contact with someone at UF to inquire about filtration ability? It says equivalent to N99 but when researching the cloth filtration (single layer) it said only tested to 1 micron particles. Viruses are smaller and need a filtration ability of 0.3 microns. Does anyone know if these masks have been tested for this size?

Guest

Article says two layers of material, though your question is still relevant.

Guest

I thought covid 19 was at 3 microns. Gas particle are usually below one micron...

Guest

COVID-19 averages .06 microns

Guest

Much smaller particles are actually easier to filter. It’s a common misunderstanding. It Hass to do with particle charge, size of the particles, being drawn to the filter material differentially.

Tom Whitlow

My understanding is that viruses are most often on particles, 3 orders of magnitude larger than the virus itself. Also, the deposition velocity of particles is what limits removal from the airstream, not pore diameter. Particles less than .5 microns have increasing deposition velocity because it is regulated by diffusion. Check out Seinfield and Pandis text for details.

Guest

You are correct!! These DO NOT replace N95s. This is very upsetting as they cannot be used for aerosol generating procedures!! I have been trying to contact Bruce Spiess to no avail. The material is rated 99 but only for BFE not PFE. They measure different things. For a true aerosol you need at the minimum a PFE of 95%. The particle sizes measured are very different, like a 10 fold order of magnitude difference. The Covid virus is 0.1 microns.

BFE measures the filtration efficiency of a mask using viable (live) particles (bacteria) that vary in size from 1 to 5 microns. ... PFE measures the filtration efficiency of a mask using nonviable (nonliving) particles that are fixed in size from 0.1 micron to 1 micron.

Guest

Two layers together makes it N99

Fit tested yes although faces are different and sealant might required

I D

Material works because of the electrostatic charge created by air passage through the fibers. Particles and virus stick to the material in the same mechanism that makes N 95.

As mask it used it collects more and it become harder to breathe. N99 standard takes more energy for respiration than N95.

I’ll be happy to work a little harder to be safe. The comment about double sided tape is also spot on.

Guest

Anyone check o2 sat after wearing for 10 minutes?

Guest

Unknown on these, but the guys over at Montana Masks makethemask.com have full respirator fit tests with o2 and co2 data. Worth checking out.

Guest

Good idea to check this out first. No use if medical people are left gasping for air.

Guest

I am so in agreement with you on that question!! While it’s a great idea, I am betting healthcare workers wearing it will have low stats considering how heavy some wraps are.

Guest

N95s are hard to breathe through as well, but at least your not on a ventilator.

Guest

This

Teresa in Toutle

I am in Southwest WA. I would love to sew these. How can I get the pattern and supplies? I would love to share with our hospitals.

Guest

https://www.travelandleisure.com/trip-ideas/volunteer-charity/joann-fabrics-donates-face-mask-sewing-kits This is a link to video directions for masks from Joanne Fabrics.

Guest

There is a group on Facebook that is international efforts of open sources on making these type of things https://www.facebook.com/groups/opensourcecovid19medicalsupplies/?notif_id=1585424049520582&notif_t=group_newly_joined_onboarding&ref=notif

Guest

The website if you wish to check it out is at GNVCovidMasks.org

Nryan72

I’m a patient at U of Fl ( Shands). These people are amazing! I’m not surprised they came up with such a wonderful idea. They are truly good people over there! Way to go U of Fl!! Once again leaders of new discoveries!!

Guest

It appears there is some product to secure the mask to the nose. Do you know what they used??? Thanks so much. I am a retired OR nurse and this looks to be a great use of a material that is plentiful.

Guest

Some are using twist ties or pipe cleaners (I would blunt both ends first)

Guest

Pipe cleaners work great!!!

Guest

The wires are needed to shape the upper edge of the mask to the individual person's face. The double-sided tape is to enhance the seal.

Guest

20 gauge craft wire available at Most Walmart or craft stores works well, zig-zag stitch it near the seam

Guest

We are cutting up Sam splints

Guest

Pipe cleaners or floral/jewelry wire.

Guest

I believe the kits have wire in them, and the instructions call for it. They passed a respirator fit test, from what I read.

https://m.facebook.com/story.php?story_fbid=10156714416202001&id=562187000?sfnsn=mo

Guest

A simple bread tie or wiring cable will work. Any piece of pliable metal.

Guest

The pliable piece used to close a bag of coffee works well.

Guest

Some bags of doughnuts also have a pliable closure; the width of it is similar to the width of the strips used on disposable masks.

Guest

Wire!

Guest

I saw a site using twist ties from bread. I used covered floral wire. Just sew into a casing similar to inserting elastic.

Guest

We are saving the metal strips out of our surgical mask and they are using them in the mask production to go over the nose.

Guest

We are down to one mask per day at my work, unless soiled or supplies run critically low. I’ve been saving my nose pieces for the last week as well

Guest

Our mask making group in Taylor County Florida are using various items for nose fitting: Floral wire or craft wire, pipe cleaners found in the craft section of Walmart, bread twist ties. (TLS) https://www.facebook.com/groups/2838481316378929/

Guest

Medical grade double-sided tape.

Guest

I saw one maker using strips cut from a disposable turkey roasting pan tri-folded and then ends folded to blunt all edges.

Guest

The product to secure the mask on the nose is called metal fabricators. The Hillery Company is donating the metal piece free to those making the face masks. The number is 860-445-9791. I called them and got 100 pieces.

Guest

Just called HILLERY company. They said go to their FB page and fill out form. If any problems, call them.

Guest

The directions with the UF article say to use 16 gauge wire, non-aluminum

Guest

Staff are removing the metal/aluminum strips out of the used masks and they are being sterilized before being placed in the top of the material.

Guest

You can also 3D print ventilators. Italy developed what needs to be printed and was able to print usable ventilators. The manufacturer (only interested in money; not lives) was not happy, BUT if lives matter, get that 3D model.

rlwalker2@gmail.com

Guest

Also in Ireland.

Guest

They’re printing ventilator valves, not the ventilators themselves.

Guest

That's incorrect...Actually a team of doctors and engineers with the University of Florida are collaborating on an open-source ventilator that can be built in 15 minutes with $125 worth of parts from a hardware store.

https://m.youtube.com/watch?v=4xX6sCamPJw&feature=youtu.be

Guest

We had this idea up here in the land of the Noles, just no way to mass produce them. Glad you were able to make it work

Guest

But there are masses of people who sew and would participate. That’s what mass production is.

Guest

Thank you Doc! For everything you do!!

Sharon Saad

I can sew them. Please send details to sharonsaad@gmail.com

I’d love to sew some. I am a retired practitioner and willing please send me info

Shotz1051@yahoo.com

Michaelle kuehne

Guest

I can also sew these for you. My email is tari.schauer@gmail.com Thank you

Guest

I showed this to a friend of mine who is a nurse, and one of the questions she had was how it would pass the fitting test that ensures the mask is sealed, much like they do with an n95 mask is tested with a computer for fitting and seal. Anyone have an answer to that?

Guest

You see elastic straps on the sides and makes them in multiple sizes for different size faces. We are making a similar version from the same material at UF Health Jacksonville

Guest

My understanding was that elastic might not withstand the autoclave and they use strips of the materials as ties.

Guest

Hi,

I work at a vet clinic and we have autoclaved masks that use ribbon

Guest

They can follow the same pattern as a small and standard mask. At this point anything is going to help and unless doing respiratory procedures that make the virus aerosolized, then this will be highly effective.

Guest

Agreed

Guest

No true way to test unless you did a fitness test with the sucrose. Having said that I think it would be better than nothing

Guest

I work as a nurse at UF Health and yes we are passing a fit test with these. The fit is adjustable with the ties (made from the same medical fabric) we are not using elastic.

Guest

Even without a proper fit test it’s better than cloth mask, bandana, n95 that’s been used for a week!

Guest

Amen!!!!

Guest

My concern also. You have to fit test it. If it doesn't seal perfect then you have airflow gaps that will put you at risk and false sense of security

Guest

Every time you put one on you are suppose to make sure it’s sealed properly. Why would that change?

Guest

Still better than a plain surgical mask, cloth mask, or bandana

Guest

When in doubt, Duct tape works wonders!

Guest

We are beyond fit testing at this point

Diane E. You g, RN, BSN, East Wenatchee, WA

😔. Still forge ahead with fit testing at every available opportunity for the long ter. So sorry that is no help to you in the coming days and weeks.

Guest

Who do I contact to assist in sewing masks with this material?

Guest

Love to see some but where

Guest

Join here!

https://www.facebook.com/groups/2539668969584363/?ref=share

Guest

How do I join Facebook group?

Guest

Shanti Vani. I am assisting in encouraging and stockpiling cloth masks. I was featured on TV20 Monday. You can email me. shantivani@cox.net

HollywoodzGuest

UF docs are known for their creativity and ingenuity, and the development of this new mask is but in microcosm to this observation. Let’s start stitching Gainesville community!community

Kendra—proud alum

Go Gators!!!!! What a great contribution.

Charlie Fernandez

As a Nole (Class of '70), I say, "Go Gators!". Well done!

Guest

Where can I get this fabric please?

Guest

McKesson produces it as well. You can get online. Search for 'surgical wrap.'

Lynelle

I looked 2 days ago—a box of the wrap is $800.

Guest

is this appropriate?

https://smile.amazon.com/Medline-GEM4124-BONDED-GEMINI-24X24/dp/B00BKTIDYA/ref=sr_1_36?dchild=1&keywords=surgical+wrap&qid=1585415751&refinements=p_n_availability%3A1248818011&rnid=16310161&s=industrial&sr=1-36

Guest

The material we are using at UF Health is Halyard ON H600 medical fabric that is used to wrap surgical instruments in before sterilization

Guest

Incredible News!

Guest

Wouldn’t microwaving the mask also sterilize it?

Guest

microwave primarily heats water, fat, and sugar molecules. Dry virus wouldn't be all that affected.

Guest

If your mask has a metal band in it to allow it to conform to the shape of you nose, you would do damage to your microwave!

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