Happy St. Patty's Day! 

The Ghost in my house...

(hee hee that sounds like it should be the beginning to a poem or something)

The ghost in my house has taken up smoking. No but really, I noticed something the other day. As I was walking to my room, there was a scent of cigarette smoke lingering around my doorway. I thought maybe my neighbor has taken up smoking, or someone outside has and it came through the window. Even though my window had been closed for months. But its old, so its never completely closed.
Well I went to work, and when I came home, it was still there. Now this is like 6 hours later, it should have dissapated by now. But no, still there, but moved a little bit. Instead of in my room and doorway, now its more in the hall. I still really thought nothing of it, and continued on my day. Later that night, it was STILL there, but now extending further down the hall. And now coming close to the bathroom door (for those who don't know my house, its about 20 feet from my room).
I slept at my cousin's place that night, and when I came back this afternoon, it was still there. Lingering around the top of the stairs, now close to the other end of the hall, at Mila's room. But it just streched, 'cause it still goes all the way to my doorway.
Getting tired of this, and since Mila said she smelt it too (so that I knew I wasn't crazy). I started to spray the Lysol Neurair, which in my past experience works really well. (don't try to vaccuum when you vaccuum belt is like melted, phew burnt rubber). But, less than a hour later, that same smokey smell returned to the hall. I've sprayed 2-3 times, and its still there.
Anyone have any clue or explanation? Or a ghost really did pick up the unhealthy habit of smoking? But I guess health issues wouldn't matter to a ghost right?