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CO and CO2 dangers are real, and most tents aren't ventillated well enough without outside wind to make it safe. CO2 dissolves well in water, especially cold water, and your body has mechanisms to...
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#1: Attribution notice removed
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System
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2020-06-03T15:54:14Z (over 4 years ago)
Source: https://outdoors.stackexchange.com/a/3288 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/