This is something I’ve heard a lot, and assuming it’s true, what’s the science behind it? Surely holes in masks are the same size no matter whether the germs are heading in or out, but I’m guessing it’s not about the holes and I’m missing something.
Obligatory disclaimer: I’m not an anti-masker, I’m still wearing it in shops for example. This is just me wanting to understand.
In: Biology
It reduces your spray from about 2m, to about just Infront of your mask.
Here is a good demonstration: https://youtu.be/x6cTDGqcUpA
It can’t protect you from the virus much as the virus can get in your eyes and such.
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