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Heldiggrisen -4 points ago +3 / -7

Saliva drops are bigger than smoke particles.

For a infected person that sneeze or coughs, wearing a mask, the mask can reduce the risk of contamination with x%.

So masks are not always useless, but for healthy people, there’s no use in wearing a mask.

Quasar 1 point ago +1 / -0

right. there are different masks for different purposes. a gas mask is not the same as an oxygen mask (like firefighters use). A surgical mask will not protect you from cvid only a n95 or better will.