Dumb advertisement near me had a sign up about their “sparkling pool” which got me thinking…what would it be like to swim in carbonation?
I think you would float better? Probably? Would it hurt more? Would all the released carbon dioxide in the vicinity of the pool be a problem?


A normal pool probably isn’t big enough (or volcano adjacent, hopefully) to be comparable, but check out https://en.wikipedia.org/wiki/Limnic_eruption for some worst-case scenarios.
Wow! Ok this was really cool to read about. Thanks!