People assume that all face masks are equal while they are not. A cheap face mask will do nothing to protect you against coronavirus, but a good one will. Masks with ratings above N95 actually filter particles such as viruses.
There is good material about ratings and respirators in general. https://www.youtube.com/watch?v=xOJF9-TNbAg&t=0s
Er see earlier comments.
@lynx started
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People assume that all face masks are equal while they are not. A cheap face mask will do nothing to protect you against coronavirus, but a good one will. Masks with ratings above N95 actually filter particles such as viruses.
There is good material about ratings and respirators in general.
https://www.youtube.com/watch?v=xOJF9-TNbAg&t=0s