If your goal is to avoid all suspicion of harmful chemicals, than using traditional deodorant or antiperspirant will make that very difficult. The easiest way to keep your body safe and healthy is to avoid entirely all chemical laden deodorants and antiperspirants, and begin using natural deodorants.
Medical Definition of nitro. : containing or being the monovalent group NO2 united through nitrogen.
A: Nitrous is made up of 2 parts nitrogen and one part oxygen (36% oxygen by weight). During the engines combustion process, at about 572 degrees F, nitrous breaks down and releases oxygen. It is this extra oxygen that allows more fuel to be burned, thus creating additional horsepower.