Please. Wear a mask when you are outdoors and around others.
- Face masks work. They need to be mandatory.
- Do cloth face masks really work? We tested them in the lab.
- Still Confused About Masks? Here’s the Science Behind How Face Masks Prevent Coronavirus.
- Face masks don’t even have to work especially well to be effective.
No, face masks don't lower oxygen intake or put you at risk of carbon dioxide poisoning.
Updated: July 20, 2020.
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