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Prosper

(761 posts)
4. You may want to ditch that valve face mask.
Sun Jul 26, 2020, 12:08 PM
Jul 2020
https://abcnews.go.com › story
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You may want to ditch that valve face mask: The pros and cons - ABC News
face masks with check valves from abcnews.go.com
May 9, 2020 · The purpose of the Centers for Disease Control and Prevention's universal masking guidelines is to prevent viral

I have used face masks most of my adult life and from personal experience I know that the masks with valves allow exhaled breath to pass virtually unrestricted through the valve. The main reason for this is to prevent exhalant from disturbing the seal of the face mask on the wearer. In reality the valved face masks are probably more dangerous in spreading the disease because the valve can probably focus and increase the velocity of exhaled breath.

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