How can a cloth mask save you from the virus if the virus itself is very small?

How can a cloth mask save you from the virus if the virus itself is very small?

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Will there be enough disposable masks for everyone?

Will there be enough disposable masks for everyone?

This is how many masks do you need to have enough for everyone? After all, they need to be constantly changed, that is, to buy new ones again and again. And there are a lot of people!

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