3 ms·
Face shields don't either yet those are used as PPE. I don't think anyone is saying vented masks are ideal. Though they are probably better than most simple co
by postalrat 6y ago
Face shields don't either yet those are used as PPE.
I don't think anyone is saying vented masks are ideal. Though they are probably better than most simple cotton masks, they aren't as good as an unvented N95.