Canned Air.

[Silvercloud29]

Air, in a can. Canned and imported from (insert from planet name here) Can even expand with larger "almost" double the AIR in a single can. With special scents like, ocean breeze, spring morning, backyard BBQ..
The cans could be sold in some vending machines, or found around some areas in the debris zone. Or mining areas for people that have a chance in space. You 'sip it' like a normal drink. Only has a few sips that give you a little bit of O2.

Idea pretty much comes from here:
https://youtu.be/Lz0xULQIaSU

[Carbadox]

Sounds like lime-aid but with salbutamol

[Kovirii]

[KikiMofo]

I think someone suggests this like every year and with that same video. Surprised we dont have it yet

[Frank_Stein]

Now that we have clouds of smoke, cracking open a can could generate those