3 ms·
No it would make it worse. Valves masks intentionally do not filter air you breathe out, so if you’re a carrier you’re fairly close to being mask less. Masks a
by olliej 6y ago
No it would make it worse. Valves masks intentionally do not filter air you breathe out, so if you’re a carrier you’re fairly close to being mask less.
Masks are better at preventing outgoing transmission than incoming so you’ve deliberately ruined the thing that a mask should be most effective as.
- postalrat 6y agoFace 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.