I'll use this occasion to answer your question about the danger of nicotine. In toxicology there is a principle that says it's the dose that makes the poison. Everything is poisonous; it's the dose that will actually do it.
You have to make a difference between chronic exposure to nicotine in low doses, as can happen in regular smoking, verses acute exposure to nicotine in adults and in children as well. Nicotine is a very powerful poison. It was used years ago as an insecticide, and a very effective insecticide, too. The concentration of nicotine sulphate that was in insecticide was actually much higher than what is currently available.