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.
Nitrous oxide (N2O) is a colorless, odorless gas and was first discovered in 1793 by the English scientist Joseph Priestley. It is also known as  laughing gas .At room temperature, it is non-flammable with a pleasant and sweet taste.Nitrous oxide is relatively non-polar, has a low molecular weight, and high lipid solubility. The molecular weight of nitrous oxide is 44.01.itrous oxide (N2O) is a colorless, odorless gas and was first discovered in 1793 by the English scientist Joseph Priestley. It is also known as  laughing gas .