LOL.... this thread is amuzing. But as Lo Bux said, Oxygen gas even in pure concentration is not flammable. It just accelerates the rate at which other substances/gases/materials burn. Same reason why the depletion of oxygen will cause a fire to go out. Things in general are unable to burn without oxygen. I've heard of people using propane instead of nitrous on fuel injected cars and seeing good results with claimed "less possible damage or risk to motor". Nitrous got a bad rap due to ignorant people using it. n2o is not dangerous as long as the car is tuned to use it, meaning as long as there is enough fuel to back it up and its used in intellegent amounts, there is little to no risk. I'd like to get back on topic, but i'm not sure what the topic is anymore... LOL.