Teens and smoking [20 characters]?

Well, my best guy friend smokes. He is 17. It is really sad because it is already hurting his body. He is always out of breath and really jumpy. Plus, it smells really bad, it is really hard to sit next to him in cl after he was smoking because I can smell it and it distracts me. One of his only downfalls is that he smokes, besides that he is a great person.