Try walking by somebody's O2 concentrator machine and firing off a stinky fart. That's probably more hazardous than breathing a little welding oxygen. If a welding tank all that was available and the need was extreme, damn right I'd be using it!
Yes if all that was available. I have to use O2 all night. Hard to drag big bottle up to the house and up a flight of stairs. I have big bottle in the basement and 100ft of hose if power goes out.Good for about 3 days.
