So, there are actually some facts that you missed.
So, there is propane which is understood to be NoS, but it isn't. It is known that way as it generally has the same way to work, the propane gets in the piston and makes a more powerful explosion than gasoline as there is chemichal shit that is going on and that I'm not good at.
2nd, nitrous and propane can be detected by its smell. While I was at a rally cup, I saw the extuinghishers, but there was one that was customed with a NoS sticker and was blue. So, after the stage finished, I went to the team and asked them about it, as nitrous/propane is illegal in legal racing competitions.
After he explained to me that it is an extuinghisher made to look cool and showed it to me, he then told me all about them.
Told me all I need to know. He told me that nitrous/propane has a particular smell which can be detected very easily if you're near the exhaust or the intake of the car.
Told me that nitrous blows up your piston if used too long, but it is just like a turbine or any other part blows it :
The car does not support the RPM's increase that fast, the piston not being timed, making it blow up, therfor is nothing special about that "blowing piston" while using NoS.
It is very dangerous on diesel cars as they support lower RPMs, as that fast RPM increase could blow the engine very fast if there is the power of a powerful turbine too.
That's all I kindda remember, but I'm going hit you up if I discover more.