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
While we’re breathing out, our germs are in the water vapor of our breath. Imagine blowing a bubble. (With germs inside it lol) YOUR mask catches YOUR breath on the way out because of this vapor. Ever notice how after wearing your mask for a bit, it’s moist/ humid inside?
But if you’re not wearing a mask and you breathe out all these germs, after floating around in the air awhile, then yeah, the water vapor kinda wears out until it’s just the germs, and then they can fit through unfiltered masks. But obviously as everyone else said, the greater risk is touching stuff the germs have managed to spread to.
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