It's not as far-fetched as you might think. I live in a second-floor condo unit. The people in the unit directly below me are smokers. In one room of my unit (formerly my bedroom), the smell of smoke is very noticeable at times. Visitors have commented on it as well, and my clothes picked up the odor, too. So what I did was swap out my bedroom and office room. It's only the one room where the smoke odor was really noticeable.
Huh. This sounds like a design problem to me. I have lived in several apartments. I have heard tvs, dogs, fights, babies crying....but never smelled smoke. Same with hotels. I can smell smoke in a room but not in a hall or non smoking room. What are they doing differently?