Being a compulsive smoker,it came as no surprise that Shah Rukh Khan did not know that it was a No-Tobacco Day when he unveiled the first trialer of his home production Ra.One in Mumbai. If I had known I would have made a short film on the hazards of smoking, he joked,But seriously,I want to request everyone not to try smoking and all those who are addicted to it,to give up the habit. I am trying very hard to kick this habit. At one time,I wanted to do it for my children,but now I want to do it for myself and my health. Smoking cigarettes stains the teeth,the mouth smells of tobacco and it adversely affects the lungs, said SRK at the event.