Oh dear, this post will make TTT and Naomi scream
There have in the past been rare cases of nitrous oxide causing spinal cord disease. Crawford 1982 showed it was safe in early pregnancy and had trenchant comments over the cost of skewering untrue possibilities.
https://www.bmj.com/rapid-response/2011/10/30/nitrous-oxide-oxidising-agent.
You will have learnt in O level chem ( those who turned up) that oxygen is very reactive, so why so much in the atmosphere? And the standard answer is - high activation energy BUT once activated, wham-bow!
Nitrous oxide is an oxidising agent and so can contribute oxygen to a (flame) reaction. The activation energy ( to make that oxygen atom available) is lower and so the flame is hotter, as more energy is available to wham-bow and not needed to activate.
This is too technical innit?
N2O features in the early scenes of Mad Max ( car)
and also in Jason Statham's The Bank Job
Oxy acetylene is hot
but N20 acetylene wham-bow is hotter ! - cuts froo concrete like butter apparently
so where do you get N2O when you go out driving in your best curls and bows ( drag racing that is!)
well buy now, it isnt banned yet
https://www.creamchargers.org.uk/nitrous-oxide-tanks--cylinders-510-c.asp
used in whipped cream as it tastes sweet