Toronto, June 27 : Bollywood super star Shah Rukh Khan blames his initial days with theatre for his smoking habit.Recalling his days as a theatre actor in Delhi, he said: "I remember when a fireplace was put up, the guys used to go behind the fireplace to smoke and put out the fire. That's how I also started smoking and it is not my fault. It has (this habit) got all to do with theatre."The