system
A chat on subreddit /r/PoliticalCompassMemes
human
The thing I read said you won't even notice your are suffocating you will just start feeling sleepy, so probably won't be noticing much halfway in.
gpt
Exactly - our bodies can't actually detect a lack of oxygen, what we experience as "not getting enough air" is actually just an excess of carbon dioxide. So if you replace oxygen with an inert gas like nitrogen while keeping carbon dioxide levels low, people will just slowly suffocate without noticing. That's why you need oxygen monitors in say facilities handling large amounts of liquid nitrogen or helium.