Who's a handy person on here and knows how to solve this problem?

So I live in an apartment building and the building is rather old and has thin walls, etc. I have two neighbors that smoke the rankest weed you have ever smelled. One of them lives on the same floor as me and that one I can sometimes smell from my main room but I’ve come up with some solutions to solve that issue.

The bigger problem is with the tenant that lives directly above me. She will smoke weed late at night or in the middle of the night and I’m pretty sure that the smell is coming through the air vent in my room. The vent is in my ceiling and it’s not easily adjustable so it’s not really possible to change the direction much of the air flow.

The smell is so bad that I am increasingly being woken up in the middle of the night and then cannot get back to sleep because of the smell. I’m at my wit’s end what to do because the rental office is not being helpful at all since marijuana is legal in our state. And I have numerous health conditions, including with my heart, where it is essential that I get a good night’s sleep.

What are some possible solutions that won’t cost an arm and a leg that I could come up with to quit having to smell this smell? And please skip telling me to try and talk to the person because the one time I went upstairs to knock on the door about a totally different issue, they never came to the door, then called the rental office and complained that I was harassing them because I had knocked on their door.