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Breathing into a paper bag to control hyperventilation might improve hypocarbia, but should NOT be done because of the risks of hypoxia and death.
This case report shows that breathing into a paper bag during hyperventilation can reduce partial pressure of oxygen by up to 42 mmHg (normal 80-100mmHg) and can result in death.
As answered by @arkiaamu, a better ...
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I did not find any studies which would investigate that matter. Moreover, in 2008 Nillni and co-workers (1) stated:
Surprisingly, although the expressed goal of breathing training is to correct hyperventilation, pCO2 has never been used as an outcome measure
In a recent study (2) it was concluded:
Clinical improvement must have depended on elements ...
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From what I can tell, yes, both oxygen and carbon dioxide gas particles will follow brownian dynamics as they move through the air on both sides of an N95 mask.
And, yes, studies (on people wearing N95 masks, not on the mask itself--which more directly answers the concern) have shown that carbon dioxide does get trapped in the mask and builds-up over time. (...
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The answer to your question is thirdhand smoking (THS):
From the American Nonsmoker's Right Foundation (ANRF), "Thirdhand smoke consists of the tobacco residue from cigarettes, cigars, and other tobacco products that is left behind after smoking and builds up on surfaces and furnishings."
So the chemicals from smoking do stick to a person and persist in ...
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