Respiratory virus particles outside an aerosol droplet don't last long, but yes, they should be filtered too (not "blocked", it will always be probabilistic)

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JumpCrisscross a day ago | parent [-]

> they should be filtered too (not "blocked", it will always be probabilistic)

The article’s point is we haven’t precisely studied what those probabilities are.

	▲	vintermann a day ago \| parent [-]
		No it isn't actually, those kind of low level technical questions have been somewhat studied. It's the end to end interventions which have been poorly studied.