Image from this LinkedIn post
If we jump in there can we have a really really good nap?
Suffocation by CO2 is a pretty painful way to go, so I wouldn’t recommend.
Yeah, I’ve taken a breath in a high-CO2 environment a few times. The whole body freaks out instantly. Not fun.
People tend to end up dead within seconds of entering any kind of oxygen-free atmosphere. People who follow them in to attempt a rescue without a tank of air generally end up dead as well, creating a whole chain of dead.
Don’t do that.