[h2odragon]

people on supplemental oxygen sometimes get CO2 problems; the oxymeter shows good numbers but they're acting drunk or feeling poorly otherwise.

Apparently its sneaky and cumulative; a few moments wont do much but as time goes on you get fizzier.

[EvanAnderson]

> ...but as time goes on you get fizzier.

While I'm fairly certain you meant "fuzzier" I can't help but thinking about bubbly blood full of dissolved CO2.

[h2odragon]

I think thats pretty much the case.

[taxicabjesus]

Supplemental oxygen usually causes hypocapnia (low blood CO2). Adding a little CO2 prevents hypocapnia.