Yeah, hypercapnia is fucked. I’m actually testing a small CO2 gas generator (literally just citric acid added dropwise to sodium bicarb with an acid trap and a dehumidifying stage) as a means to kill pests on houseplants and did some reading on the symptoms to be safe. It is unpleasant. It’s not the worst death I could imagine, but it’s shit.
As an aside, the way that CO2 kills bugs is interesting. Basically, the excess CO2 (in the range of 10-80,000 ppm) causes their spiracules (i.e. the little holes in their exoskeletons they use to breath) to stay open. This causes them to lose moisture until they die of dehydration (usually in a matter of hours). All this happens long before they asphyxiate or suffer from any sort of acidification from the CO2. It’s a bit fucked up, but all other means of getting rid of the pests on my partner’s houseplants have failed.
oh my God it’s like you’re in my head get out of my head. I’m reading this because I’m trying to catch up on sleep and need to distract myself from the dread, so this hits way too close to home lol