[Flumio]

Any thoughts on how to inhale it without risking others finding you in a oxygen deprived setup?

Like a warning sign or some fan kicking in later?

[LorenPechtel]

You don't set up such an environment in the first place. Tank to flow limiter to hose to bag.

[numpad0]

Maybe it could be done outside with a nasal cannula?

[exe34]

i considered diving equipment, but I never investigated them properly.