I'm a assistant resident manager in a high end luxury building for a major developer in the city. When we have a problem like this, 1st line of defense is to make sure you seal up all the electrical outlets, caulk the base boards/molding make sure the windows are sealed properly. Also the smoker has to ventilate his/her apt properly. What you need to do is look at the lease/ house rules to verify that this is in writing. If this is not in the house rules make an amendment to the house rules with a stipulation, which will mean a violation, then the board/owner will decide what the outcome will be. Remember, your all neighbors in a community, try diplomacy first, see the the resident will cooperate to cease or move the smoking to one room instead of the entire apt.