Salman Khan, who has vowed not to smoke, seems to be adamant about kicking the butt. For a while now, the star has refrained from lighting up and he seems to be staying true to his word. But not without chewing gum!u00a0While shooting for the Bigg Boss promos recently, the star was spotted not lighting up even once. Normally Sallu reaches out for his cigarette pack after every shot. But onlookers were surprised to see the star determined not to puff away.