Ah! I don't think they need so much oxygen to be a fire hazard. People would start acting crazy, at least. I also wonder if they use to do the same - to some e

Ah! I don't think they need so much oxygen to be a fire hazard. People would start acting crazy, at least. I also wonder if they use to do the same - to some extend - in trains and airplanes, I always feel quite relaxed while traveling by them.