"There is evidence that nitrosation of nicotine in vivo could lead to formation of N-nitrosonornicotine (NNN) and 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK).[13] which are known to be highly carcinogenic."

Well I don't want cancer - That was the whole point of having my last cig in 2019.

I will have to quit precious.. nicotine gum..