I dont think they would call the cops on you. They may be more inclined to join you. The cops couldnt search your house anyway so you could just deny it.

When I blow smoke out of my window when it is windy, sometimes the smoke shoots down to the ground. Ive seen it go into my neighbours porch before (they always have the porch door open). I have always though it would be funny if this happend when they were outside and they get hit by a wave of smoke.