Comment on If I'm stuck in the same area as someone who is clearly sick (runny nose, coughing etc) is there some combo of short/long breaths or nose/mouth breathing that's a better defense against catching it?

AbouBenAdhem@lemmy.world ⁨2⁩ ⁨months⁩ ago

As everyone else is saying, wear a mask if you have one.

But it seems like the question you’re directly asking is more about the fluid flow of air in the room. With your suggestion of alternating short/long breaths, you might be imagining that you can blow the germs away and then breathe in the clear space left behind, but of course it doesn’t work that way. Breathing quickly creates more turbulence, which stirs up the air and sucks in more air from further away—both of which increase your risk. (Reducing turbulence from your breath is the second function of a mask, besides filtering out particles.) In the best-case scenario, the germs are in large aerosolized droplets which will settle out of the air quickly, but only if the air is still—so you’d want to breathe softly and move as little as possible. (And the droplets can still be infectious after they fall, so wash your hands after touching anything as well.)

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