Nicotine, nicotine, nicotine! There are many benefits to Nicotine. It's been so badly damaged by the anti smoking group, in that it is contained in cigarette smoke, that you just mention it in company and everyone screams and hits the deck.
If nicotine is SO addictive, where are all the people addicted to nicotine patches?
I can't read the whole thing because I am not going to pay for it but here is the conclusion
Preventing Sin: The Ethics of Vaccines Against Smoking
"In this paper, we consider whether it would be ethical for parents
to vaccinate their children against smoking if a nicotine vaccine were
to be proven effective as a preventive intervention for children or
adolescents. We begin by explaining the current state of nicotine
vaccine science and suggesting some likely ethical concerns about
allowing parents to have their children receive a vaccine. We then
present a preliminary argument for making vaccination permissible, at
least if nicotine vaccination substantially reduces the probability that
someone subsequently becomes a smoker. We consider a series of possible
ethical objections, which are useful for identifying the conditions
under which it would be ethical for parents to vaccinate their children
against smoking. We conclude that it would be permissible for parents to
give their child a nicotine vaccine if the following conditions were
met: the vaccine is expected to result in a net benefit to each
individual vaccinated, the expected harms from the side effects of the
vaccine are lower than the nonvoluntary harms caused by smoking, and
there are no other, less manipulative methods available that are as
effective at preventing smoking initiation."