reduce pocket air tank o2 usage

[babayetu83]

It’s an air tank that can fit in your pocket. Try to imagine how little air is gonna be in that for you to breath irl. It’s a miracle it lasts as long as it does in game!

But for real that’s what big tanks and the jet pack are for.

i really don't like drawing the line of "but realism!" when so many other fantastical/nonsensical things already exist in the game