You may in fact smell like smoke, depending on how often you are in a room with it. I'm not going to claim that its overwhelming or anything (but she does smoke outside/out the window) but I can smell it on most fabrics in the apartment (couch/seat cushions/her clothing).

And yes, sealing can help a lot. No argument there. A close friend of mine's bathroom reeked of smoke after he bought the apartment until they redid all of the tiling and sealing around the room and now its completely gone. Not reduced, but gone.

I'm not really weighing in on if you should/shouldn't be able to smoke in your apartment right now, and yes certain things can really help (although maybe it should be illegal to smoke in your apartment until you get an architect to sign off that the sealant in your apartment is "up to code", the same way people who live on floors above the first are required to put down carpeting in most apartment buildings). I'm just mentioning that you not being able to smell smoke unless you're in the same room is much more likely a sensitivity issue than anything else.