I’ve been seeing tables showing the effectiveness, or ineffectiveness, of different types of masks on Facebook lately. Some have been taking it the right way: A mask is not a “Get Out of Jail Free” card, you need to self-isolate, social distance, wash hands etc., etc even if you were a mask.
But then others ask, “Why bother?”
There are two reasons.
The first is simple: the mask helps to remind you to not touch your face and limits the places that your hand actually touches. Just remember to consider your mask contaminated after you have been in public.
The second is much more complicated.
Every time you breath, you release a lot of water vapor in hundreds or thousands of tiny water droplets. These can hang in the air for hours and will settle on objects. If you have the virus, those water droplets will have the virus. This…
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