I’ve heard a lot of anti-maskers use the argument that since we breathe out CO2, it will become trapped in the mask and is dangerous to breathe back in.
Obviously, this isn’t the case, because doctors wear their masks for hours and hours on end while doing surgeries. However, I am wondering, how does it work?
In: Biology
Imagine you have a field, now imagine you place fence posts in a line with 50m spacing between the posts. No fencing, just the posts. If you’re a CO2 molecule, this line of posts isn’t going to stop you crossing to the other side of the field is it? The gaps between them are far too large to impede you. That’s sort of the lunacy of what anti-maskers are suggesting. Relative to the size of the holes in a fabric mesh, CO2 is insignificantly small, but moisture droplets are large enough to be impeded.
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