Masks were never used this way. It was always understood that masks were to prevent already sick people from coughing and sneezing and spreading the flu. The only reason masks were used medically were for patients with the flu to not spread it in the doctors office, or when preforming surgery. Masks were never to stop people from spreading sickness by breathing.
It's as stupid as the medieval theory of 'miasma' or illness being transmitted by 'bad air' .... I've noticed it's exclusively niggers who gesture to me to out a mask on during my commute on the subway.. If just breathing spred the virus there would be 5 billion cases.
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