How far does the air project from the user after it goes through that filter? And why the fuck do cartoonists have to ask these questions?https://twitter.com/MayoClinicHS/status/1259241740269170689 …
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My non-scientist brain is struggling to grasp the yoga like arguments being made for and against masks, different types of masks, when and how masks work. I thought science would solve all of these problems objectively when I learned about electron microscopes in school.
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The argument has always been about keeping the water droplets that carry virus near the exhaler, at least for non-healthcare workers.
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Some models of N95 have infiltrated exhalation valve.https://twitter.com/i/events/1285526322194706438?s=21 …
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It was a deep-state coma. (sic)
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