Suppose you slept face to face with another person, and would therefore be breathing in nearly everything they are breathing out. Would breathing in so much CO2 (as well as the countless other chemicals we exhale) have any short or long term effects?
Edit: There was a CPR mouth-to-mouth in the past, but that didn’t cover the effects after an extended amount of time.
In: Biology
Cut and paste for your viewing pleasure…. The atmosphere is about 20 percent oxygen. People breathe this in, and breathe 15 percent oxygen out, making the air that’s left lower in Good Ol’ Oh Two, but still quite breathable.
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