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They do that in the environment that the masks are designed for.
by ghoward 5y ago
They do that in the environment that the masks are designed for.
- CRConrad 5y agoSo masks somehow magically concentrate CO2 more than any other gas only outside of operating theaters? Or is this selective gas concentration perfectly normal, and the magic is that it doesn't happen in operating theaters? The "environment that the masks are designed for" is the same Euclidean 3D space containing the same air as all other environments.