At 05:38 20 March 2020, Tango Whisky wrote:
What is needed are breathing apparatus.
Completely differnt game.

Not a medic, just a biochemist. Hard to see what harm could be
done using gliding oxygen to help someone with breathing
difficulties. But one might ask why such a person was not already
in a hospital?
The main 'problem' is the small size of gliding oxygen cylinders;
now if one happens to have a big oxyacetylene welding kit in the
garage that's a different matter.