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
First some simple facts:
* Coronavirus particles are 120 nanometers,
* The pore size in N95 masks is generally 100 nanometers
– so the mask will block coronavirus particles from getting in
* Carbon dioxide is 0.232 nanometers
– so the masks will *not* prevent carbon dioxide from getting out.
So you are not “breathing CO2 into your mask”, the CO2 is expelled easily through the mask into the surrounding air.
**It is that simple.**
How can people be so stupid?
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