[2022] In prep for the new Fire metrics...

O2 toxicity will be a longterm problem, rather than shortterm, for the player. We will test out and discuss the mechanics here and on discord, through a beta while coming up with a system.

CO2 toxicity is a lot easier to outline as there is some great research on the topic. We will likely mix this in with partial pressure calculations, but the rough estimate remains the same.

Concentrations of more than 10% carbon dioxide may cause convulsions, coma, and death. CO2 levels of more than 30% act rapidly leading to loss of consciousness in seconds.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5380556/