I'm kind of at my wits end, trying to resolve some serious issues we have at our apartment. Not sure if this is the right place to ask this question; if not, please point me in the right direction.
We live on the top floor of a multi-level apartment building in Southern California. Neighbors around us smoke cigarettes and marijuana (despite this being specifically prohibited by the lease agreement), and somehow that smoke is making it up into our attic. This is a significant issue, as our AC/Heater/Fan unit is not ducted to the air return vent in our hallway, but is instead open, sucking in air from the attic (and probably some from air return vent as well). This results in a lot of smoke in our apartment, strong enough to wake us up in the middle of the night. This has forced us to quit using our AC, even during the heat of the summer.
We've been trying to resolve these issues with our landlord for around six months now to no avail. My question for those of you with more experience than me in HVAC systems: is this "open air return" system that is drawing in a lot of attic air a genuine issue that the landlord needs to address, or do we need to look into other ways of convincing the landlord to help us?