The former host of Comedy Central’s Daily Show started smoking when he was 15 — and wasn't able to kick the habit until December 28, 2000. On Primetime Glick, Stewart explained why he had smoked for so long. “I used cigarettes to fill a hole in me — an emotional void,” he said. “It was an activity that I did to make myself feel better.” Stewart reportedly keeps a gumball machine near his desk so he can grab a piece of gum whenever he has a nicotine craving.
The 1990s supermodel smoked a pack of cigarettes a day for seven years before she successfully quit. (She was eventually diagnosed, at 31, with emphysema.) “I had tried [to quit smoking] many times but always went back to it,” Turlington told O, The Oprah Magazine. “Finally, I just got fed up with not keeping my promise to myself, and I quit cold turkey.” When Turlington attempted to return to modeling six months later, her slight weight gain cost her a job with the designer Yves Saint Laurent, and she decided to quit runway modeling.