@Sena Hansler next time the stone heads are smoking weed start cooking something that has high aroma and smell really good. Maybe it'll pass back through to them. If anything else get some blue painting tape saran wrap and spray deotirizer down the vents and seal them shut... I used to live in an apartment. Logical thing would be bring it up to the landlord but they most of the time don't care.
Down sides to it is if they smoke enough you can get a contact high. In rare and unlikely cases you could fail a drug test. Ug and that stentch sticks to everything.
Yeah I ended up carrying the stench upstairs, on my clothes -.-; They must've drowned themselves in a freaking bucket full because it was sooooo strong it was nasty. THAT explains why I felt almost immediately nauseous when sitting down, after being outside.