Getting your Friend to Stop Smoking

A new generation of smokers. A new generation of crazy products to help you stop. What I'm thinking is a cigarette that injects a powder into your throat to get you off the adiction. Your friend would switch out the cigarettes with these modified ones and when you lit it, nothing would happen. But when you breath into the cigarette and the ember spreads, it would light a fuse which lights a tiny amount of contained esplosives (gunpowder, TNT, rocket fuel). Not enough to harm them of course but enough to launch an amount of itch power into their throats, giving them a rash that they suspect is from their "smoking habits". When tired of the continued itch, they'll quit without any problems cause theres no nicotine in the cigarettes they've been smoking. Also work as a great prank.