As for the film, when it is censored in September all the scenes showing Kareena blowing smokes in air would be blurred out.
So here's the non-negotiable deal. If your hero or heroine in a film is a smoker you've got reason to worry. If your protagonist is a chain-smoker then you have serious reason for concern. The Censor Board Of Film Certification (CBFC ) has decided to blur all images of smoking from feature films.
As for trailers scenes showing smoking stand banned
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Confirming the censoring of Kareena's smoking scene as well as some love-making scenes and expletives in the trailer, J.P.Singh, CBFC's Regional Officer Mumbai said, "We've taken a decision some time back to show no smoking in trailers. This is because in a trailer there can no disclaimer about smoking. In the full-length feature film there has to be disclaimer about smoking at the beginning and after interval. Even then the smoking sequences are blurred."