No Smoking is at its heart an anarchist film. It wants you to question the established conventions and the compromises you've made to follow them. If you take away the cigarettes, No Smoking is an autobiographical film. Kashyap is Just K, trying to make his kind of films in a world that makes him feel guilty for doing that

• Director Anurag Kashyap's friend Kay Kay Menon was the first choice for the main lead role but Kay Kay declined saying that he should cast an actor having stardom, so Anurag went to Shah Rukh Khan. SRK agreed to do the film but when he read the entire script, he commented that he would love to work with Kashyap in the future but since this film promotes "anti smoking" feelings, he will not do it. This is where John Abraham who was the only other mainstream actor to have replied to Kashyap's sms entered the scene. Abraham loved the script and agreed to do it spot on.

• About halfway through the film one character says a dialogue, while launching his cigars in India, which goes like "'Beedi Jalaai le' ke is 'vishal' desh mein, cigar 'gulzar'" (In this 'Vishal' (huge) country of 'Beedi jalaai le' (smoking), cigar is 'Gulzar' (flourishing or pleasant)). This dialogue is a cleverly put tribute to the following: Vishal Bhardwaj - the music director and producer of this film (and a good friend of Anurag Kashyap), the lyrics writer of the film Gulzar (a close friend of both Vishal Bharadwaj and Anurag Kashyap) and the song 'Beedi Jalaai Le' from Vishal's then recently released movie Omkara (2006)

• Ranvir Shorey's character name was taken from Anurag Kashyap's good friend Abbas Tyrewala.