This scientist answered the question of to mask or not to mask. 😷 engineering
Masked vs. No Mask On
His demonstration was quite straightforward: Dr. Davis sneezed, sang, talked, and coughed while he had agar cultures near his face, he had aOnce the cultures were left to grow the bacteria his respiratory droplets carried, the results were striking. Wherever droplets and bacteria from his mouth landed, you see the bacteria colony that is in great numbers and partying like there's no tomorrow; however, in those where he was wearing a mask, they are nowhere to be seen.
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