alt Hacker NewsWhat bad gases? It is literally air. Do you see a lot of mechanics passing out in garages with all that compressed air being let loose?
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Dylan16807 • today at 1:00 AM
They said "something like that" and I could easily see other outputs, especially nitrogen or some kind of combustion.
It looks like they are actually using nitrogen: https://youtube.com/watch?v=22rvpUecLts&t=1134s