The CDCs data on masks says store bought
by 84david (2021-08-28 08:51:46)

In reply to: Depends on the mask. Most masks are crap, only  posted by MarkinSeattle


cloth or paper masks are only about 20-30
percent effective in preventing covid, if properly
worn. Neck gaiters and other novelty masks even less so.
From my own non-scientific observations at the airport and
air travel, maybe half of people wear them properly.

Get vaxed is the answer. If you must wear a mask,
wear an N-95 certified one.