if this works, doesn't this imply a lot of the exhaled breath is unfiltered?https://twitter.com/MDiPaolaMD/status/1293311712507166720 …
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in cases that have involved air conditioning for example, in which the air already has to have undergone one sharp redirection (in the ac unit), the aerosols above a certain size, they would already be knocked out given the kind of redirection...
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The mask isn't tight enough to prevent a lot of flow at the sides.
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There is still a problem. But. It's greatly reduced if both parties are wearing masks. It's been tested abs reported on.
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makes sense if the viral load theories are correct
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