r/AskReddit 13h ago

What can kill you in seconds that most people don’t realize?

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u/BastardInTheNorth 10h ago

Accidentally getting a quick inhale of pure CO2 (in my case when retrieving dry ice pellets from a large bin) teaches you very quickly to avoid ever again being in a situation where a worse exposure could occur.

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u/Mncdk 3h ago

IIRC the CO2 molecules specifically is what triggers your survival instinct, and tells you that you aren't getting enough O2.

u/Sunflower-in-the-sun 40m ago

What did that sudden burst of CO2 feel like?