She has smoked four times previously onscreen. In the year 2000 Alba smoked in the movie Paranoid and the television series Dark Angel. In Paranoid she took an uninhaled puff that looked to confirm her status as a non-smoker at the time. She then appeared in Dark Angel and gave a much more refined performance. Jessica Alba smokes in several scenes with a couple of wonderful exhales and even an extended talking exhale.
Then in 2007 there was Bill in which she takes a single hit off a joint before passing it along. Most recently in The Killer Inside Me where Jessica had a very poorly edited smoking scene. Not really even worth the trouble of tracking it down truthfully. The editing ruined it.
Now comes A.C.O.D. which was released a couple of weeks back in limited fashion. You are going to have to hunt for this one or else wait for the DVD or cable television. Luckily a scene has turned up on you tube from the movie with Jessica Alba smoking. I must say I can do without the bad tattoo, but otherwise it is a nice surprise from her. Here it is: