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
Grab a balloon, blow into it once and tie it off. That’s how much space the CO2 takes up when you breathe it out. Now try to fit that balloon in between your face and the mask your mask doesn’t leave nearly enough room to retain all of that old air, so your exhalations spread out into the atmosphere basically as normal and you can subsequently breathe in fresh air without issue. The mask is more for catching the non-air particles like moisture that come out when you breathe.
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