Weird question, maybe, but the integrated AC/heating units in my apartment are passing the smell of cured meats into the unit. I'm talking Summer sausage, pepperoni, chorizo, coppa, lonzino, soujouk, etc., as though I were standing next to a meat counter at a traditional butcher's with links hanging from the walls/ceiling.

Aside from the remote possibility that the landlord has started storing $50K in salted meats in whatever out-building on the roof contains the building's air intake & venting, what the Hell could be producing this scent? The AC units are antiquated (50-ish years), fully electric, but not routed to any kind of boiler like some older buildings... is there some chemical of which I'm not aware that could be leaking and producing that smell? If so, it is hazardous?