We have been in units with tobacco resin plastered on the wall and dripping down like yellow slime. 

They have tats from prison, chew tobacco for breakfast and drive jacked up 4x4s. 

Like in stocks, I don't buy tobacco company stocks, even if they give the highest return.

You can also try this:http://www.amazon.com/Fire-One-Shot-Aerosol-Can/dp/B000AQNDSA/ref=sr_1_1?

Reduce any alcohol or tobacco consumption.

The extra seceret ingredient on this project was a couple of coats of rustoleum 2x matt clear right out of the aerosol can!

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

Smoking is smoking, whether it's smoke from tobacco or marijuana or cloves, it's smells and, depending on proximity, it's second hand smoke.

In reality, the legal costs associated with suing a major corporation would likely bankrupt the plaintiffs long before it had any major impact on the company...Well I think the tobacco companies may disagree with you here.

If it is in the walls and we know what it may be (tobacco, pet, etc), we have a recipe (tsp, rinse, seal, paint)... or if it is from the floors, we clean or even pull the flooring (seal underneath refloor, etc)...One simple carpet one I use is sprinkling the large (13.5 lb)  bags of baking soda into the carpet (if carpeted)... work it into the floor with stiff broom, so it gets into carpet to pad.