I wish I knew, but at least I can sympathize. It’s very hard to defend against either foul smell or foul sound; you can’t close off those senses (and it’s little comfort to recall that always-open ears and noses probably saved our ancestors’ lives). Marijuana odor is especially pungent and permeating. I’ve been in an office building where there was a medical marijuana clinic in the basement, and I was swamped with the smell on an upper floor. When it reaches me from behind closed doors in my own house, it makes me feel sick and light-headed. That’s almost worse than having a close neighbor who plays loud music with a heavy bass line day and night. It’s possible, although not very likely, that your neighbors might let up a little if you told them that a lot of their fumes were coming through to you and bothering you; but they don’t sound like considerate people, and you’re not the sort of person who wants to confront a neighbor with a complaint, no matter how justified or mildly put. You could at least notify the management of your discomfort, and I think you should do that right away. Perhaps you could cite health concerns pertaining to inhaling second-hand smoke. If you can smell it, that means particles are reaching you. You’re paying to inhabit a livable space, and you don’t have that. I hope someone else can offer a better solution, because sympathy is really all I’ve got.