Smoking has been one of the big social problems. It is said smoking is bad for the health because it causes some diseases. According to WHO, over 1.1 billion people in the world smoked tobaccos in 2015, and smoking in public places is regulated recent year. In my opinion, regulation of smoking in public places is a desirable idea because I think that smoking makes many people unpleasant. So, I will tell you why smoking in public places is not good.