I have new neighbours.
I know because my apartment has smelled like the following things in the last 24 hours due to shared ventilation:
Old man cigarettes
Pot(my bathroom is basically hot boxed 24/7 and not to my doing. If this is your thing come on over! Every bath is a "special" bath now at Brandy's loft)
Also, my apartment is now filled with the joyful sounds of reggae and babies crying radiating through the living room floor.