Phlyra
FLOSSing
- Joined
- Jul 25, 2019
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Why You Shouldn't Wear a COVID-19 Mask That Has a Valve - Slashdot
In some states and major cities, it's now mandatory to wear a mask in public to prevent the spread of COVID-19. That mask could be anything from a handkerchief to a designer cotton mask to a full-blown N95 respirator, so long as you have something between your mouth and nose and the world around...science.slashdot.org
"Why? Because a mask with a valve may protect you from some pathogens in the air, but it doesn't protect the people around you from your own breath."
--ADDED:
Astonishing ! I can't believe that's true:
Confirmed by:
https://edition.cnn.com/2020/05/07/politics/axl-rose-steve-mnuchin/index.html (last paragraph)
Are N95 & KN95 Masks Reusable and How to Wash them? – Smart Air

Is Washing Masks Effective After Virus Exposure? – Smart Air


Do DIY Cloth Masks Protect Us From COVID-19? – Smart Air
Researchers built DIY masks from household materials and tested their effectiveness vs. sub-micron particles. Results found they blocked 60% of particles.
smartairfilters.com