Nitrous oxide could possibly be made use of being an oxidiser in a rocket motor. As compared to other oxidisers, it's significantly less harmful plus more secure at space temperature, which makes it easier to shop and safer to hold with a flight. Thus nitrous oxide is contraindicated in pneumothorax, https://ilokaasu-k-rkk-inen13567.jasperwiki.com/7038863/the_smart_trick_of_fast_gas_that_no_one_is_discussing