Coronavirus tests by the US government and other scientists "found that viable virus could be detected up to three hours later in the air, up to four hours on copper, up to 24 hours on cardboard and up to two to three days on plastic and stainless steel.”https://apnews.com/fe0239e95b8ad1037639ed833b990e48 …
Okay, let's game this out. You have a cold. Face protection is worn only by the sick. Do you put on a mask and single yourself out as potentially infected? Or just try not to cough?
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If you answered A, how confident are you that the guy next to you will make the same choice?
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