DO NOT WORK IN A TOBACCO TAR-STREAKED ROOM WITHOUT A RESPIRATOR FITTED WITH ORGANIC VAPOR CARTRIDGES.But eventually, I learned that a sponge mop and a lot of sprayed detergent was what I needed to remove most of the tar off the walls, followed by a lot more sprayed water to rinse.

North Carolina was known for tobacco, textiles and furniture.  

I've cleaned the walls with recommended cleaner and had the air ducts and furnace cleaned of any tobacco resin.

Big burly guys that chew tobacco in their sleep and have neck tats. 

And the only cases attorneys take on contingency basically in the US is insurance claims in auto wrecks or against big tobacco or other medical things you see those advertised all the time big whopper class actions.. or if your in the South of the US big signs by the ambulance chasing attorneys looking for crash victims to go after insurance.. 

Never forget the house with drip lines from tobacco smoke.

If you have a serious issue, ongoing quarterly pest control, or aerosol "bombing" may be necessary.

When interviewing a prospective tenant on site, be aware if their clothes have tobacco/weed odor or their car smells of of cigarette smoke or other foul smells, as that is what they will be bringing into your unit.

Try to identify the smell... grease, pungent food odor, mold/moisture, tobacco/other smoke, plastic off-gassing, paint off-gassing, pet smell, rodent odor, etc.

They have neck tats and chew tobacco in their sleep.