Safe, as long as you're not boiling down a pack of cigarettes and precipitating out all of the nicotine in order to then deliberately poison a child, yes. Pure

Safe, as long as you're not boiling down a pack of cigarettes and precipitating out all of the nicotine in order to then deliberately poison a child, yes. Pure nicotine is absolutely lethal. It's also hard to come by unless you make your own - which you'd only do if you wanted to poison someone.