It's you. As in, you know who you are, you bastard.
I have people over from time to time,. I mean they come for whatever reason and don't go. So they're there and I have my usual extended nap and wake up to find my house smelling like a Peterborough bus stop. It still sort of does, kinda. All the suspects involved claim to not smoke or have quit smoking years ago, and have no idea what I'm talking about.
They're filthy smoking liars, and evil betraying betrayers, that's what they are.