Exposure to pro-tobacco movies, TV shows, and ads more than doubles your chances of starting smoking.
Wellman, Robert J., et al. "The Extent to Which Tobacco Marketing and Tobacco Use in Films Contribute to Children's Use of Tobacco: A Meta-analysis." Archive of Pediatric and Adolescent Medicine. Jan. 2007.https://www.researchgate.net/publication/6653146_The_Extent_to_Which_Tobacco_Marketing_and_Tobacco_Use_in_Films_Contribute_to_Children's_Use_of_Tobacco_A_Meta-analysis