Concerned over the impression they leave on youngsters when they smoke on screen, Union Health Minister Anbumani Ramadoss has urged Bollywood stars Amitabh Bachchan and Shahrukh Khan to desist from smoking in their films.“The movies are most responsible (for encouraging smoking). When I said movies should not have smoking scenes, we have statistics which show that 52% of children have their first puff of a cigarette because of movie celebrities,” he said.