Eli5: Why isn’t carbon monoxide used in slaughterhouses to kill humanely?

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(marked this as engineering because I’m not sure what it would fall under, biology maybe?)

I’ve seen in a documentary where they would put pigs in cages and lower them into a pit of CO2, but it doesn’t kill quickly and the pig would thrash around violently as it was slowly poisoned. Why not just use CO? it would kill humanely, and from what I understand, a lot of packaged meat is packaged in containers with CO to prevent spoiling, so there must be no safety issue with the meat.

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Anonymous 0 Comments

CO₂ is not immediately dangerous in terms of toxicity.

C0 poses a lot of risks – if there’s a leak, it can kill every human in the factory. Just an example of the dangers of lots of poisonous gas:
https://en.wikipedia.org/wiki/Bhopal_disaster

C0 has to be produced in a pure form, if there’s impurities there might be toxic residues.

Carbon monoxide can also cause serious discoloring: https://www.google.com/search?q=carbon+monoxide+skin+&tbm=isch

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