Deanna King

Deanna King

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Video Shows Why Facemasks Don't Contain Your Cough Very Well

German scientists did a test to find out the best way to stop the flow of air from a cough. They used a method that allowed them to see the air as it dispersed from a man's mouth. First they had him breathe normally, and then do an open-air cough. Then he coughed into his hand, into his sleeve, into a dust mask, and finally into a surgical mask. None of the methods completely stopped the flow of air, but the one that worked best was when he coughed into his sleeve or elbow.


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