If you are not a smoker and your other tenants are not smokers then it can be a big problem.If you get this lady to leave plan on de-greasing the ceilings, walls, ductwork etc. to get the film of smoke out.Either way it sounds like you are going to be spending a lot of money in the future so plan for it now.

Walk up to them and when they are about to say something, ask them if they could spare a dollar and a cigarette.  

Many who would be inclined to fly the Battle Flag of the Army of Northern Virginia (this is most likely the flag you are actually concerned about) will also display the symbol on their car, their key chain or, perhaps, on their cigarette lighter.

He stunk to high heaven of cigarette smoke and we had to air out the place afterward.

The fire departments report determined that the fire was caused by the tenant throwing a cigarette into the trashcan, and also mentioned finding drugs on the premises. 

All, Looking at a house that has a bad smell in it, they had dogs and a smoker.  

White cabinets eventually turn yellowish after awhile especially if you have smokers in the house.

My issues were cigarette smoke.

Every time I would show up she would be out on the front porch smoking a cigarette.

Did you go find them to let them know about their statutory redemption rights and that you would help them out with that so they wouldn't lose their property and no "mean" investors would profit off their pain, or did you run around feeling great about the deal you bought and telling your buddies about how you just got a "smoker" of a deal?