They're working on a special injection that will stop young people getting hooked on ciggies, according to New Scientist magazine.
The boffins reckon they can create an injection that will help your body kill all the nicotine cells before they reach the brain, which should stop people getting addicted.
But some groups - even some against smoking - don't like the idea of the injections.
They think the big companies who the scientists are working for, might be more interested in making money than helping kids.
An estimated 80% of smokers start when they are teenagers, making a drug that could stop them starting very important.