If you need to clear the nasal passages to remove foreign objects, the respiratory muscles to generate coordinates an amazingly complicated process that we know as sneezing, which is nothing but the violent expulsion of compressed air.
Thus, the particles that have crept into the nose shoot out to 170 miles per hour, ie faster than hurricane winds.
course this is a breeze compared with the cough, then a convulsive air reaches 900 kilometers per hour while passing through the throat.
Which means, Cover your mouth when coughing or sneezing.
knew?
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