In the past people thought that buying and smoking cigarettes was completely safe, but we now know that it can cause considerable damage to the body and can increase your chance of having different kinds of diseases including lung cancer.
Even so, giving up smoking is a difficult thing to do because it is so addictive, which is why many people are interested in smoking hypnosis techniques.
There are loads of different methods of giving up smoking, but most people haven't thought of using hypnosis.
The idea is that when people are in the trance like state that comes with being hypnotised they are more likely to be able to be persuaded how bad smoking is.
The hypnotist uses the strong power of suggestion to give the person the willpower to give up smoking on their own.
Hypnosis for smoking can't force people who don't want to give up smoking to stop, but it may be some help to people who want to stop but don't know how to do it.
However the effectiveness of this treatment is widely contested and definitely varies between people so there is no guarantee that it will work.
If you see a claim that someone will hypnotise you and solve all your smoking problems then you should probably ignore it, but if you find a legitimate service where the power of suggestion is used without outlandish guarantees then it might be worth a go to try and decrease the difficulty of giving up smoking for good.