Tobacco, of course, is a non-discretionary addiction.She's obviously trolling for a sucker, of which said species are rapidly disappearing in these wonderful economic times.If she built it in '89 she may have built up some serious equity in the property.

Hi Chris,A good couple of cans of Kilz aerosol spray (flat) will cover that stain.

get lots of aerosol cans and spray those.  

The other tenants might be better off without the tobacco smoke smell / second-hand smoke.

Property currently has a mix of 4 – large 2 bedrooms, 5 – 1 bedrooms, 1 - office space, 1 – retails space (currently a Puff’s Tobacco Store) with room for an additional 12th unit, a 1 bedroom.

Tobacco? 

Of note: this has not been evaluated by an attorney, and I have no way of knowing if the language would be legal in your state...NO SMOKING POLICY: No smoking, to include cigarettes, pipes, cigars, or any other tobacco smoking material, and/or vapor like products is allowed within the structure of the building; including the rental unit, basement, or garage, or outside on the adjoining grounds, either by the Tenants or their guests.

Prime with Pro block oil in gallons or aerosol cans depending how bad it is and top coat with any latex paint.

Big burly guys with neck tats, they drive jacked up 4x4s, smell like diesel fuel and chew tobacco in their sleep. 

Through no fault of their own, the 2nd hand smoker, especially in the days when airlines were allowing smoking, can develop and have been proven to have higher incidence of cancer.The "empirical cost" was not paid at all by the Tobacco companies and in fact, developed propaganda campaigns to mislead the public.After the mounting evidence reached a certain point, taxes on Cigarettes skyrocketed, for at least 2 reasons. 1) to discourage the use of cigarettes so you DON'T have an increase of getting cancer and 2) to help pay for some of the empirical costs associated with the healthcare costs.In the case of Investors following the OP's strategy is one that I have personally seen time and time again.