If you can stand it, start collecting the kittie offal and stuffing it into places that will carry the smell to your neighbor.
See what kind of conversation that starts.
The problem is, the vents are shared because of a common attic. Not much I can do without affecting myself...except using LOTS of air freshener in the cold air vent...
It was a very good idea though! LOL!
Query: What is AMD and what does it do in the computer?