This will include all Marvel and Star Wars films as well as their own films, unless the film is portraying a historical character known for smoking. Interesting. Seems like the right thing to do for a children's film.
The news broke at Disney’s annual shareholder meeting in San Francisco on Thursday, during which the studio also confirmed plans for Frozen 2 and revealed the title of its Star Wars spin-off project, Rogue One. Walt Disney chairman and CEO Bob Iger said he would “absolutely prohibit” smoking in all Disney films going forward, including those produced by the studio’s wholly owned comic-book-movie division, Marvel Studios, and Star Wars unit Lucasfilm. “I thought it was the right thing for us to do,” said Iger, who was responding to a query from an investor. “We are extending our policy to prohibit smoking in movies across the board: Marvel, Lucas, Pixar and Disney films,” he said. “Except when we are depicting a historical figure who may have smoked at the time.
http://www.theguardian.com/film/2015/mar/13/disney-to-ban-smoking-in-all-future-movies