The reason we don't allow smoking, of any kind, on our PROPERTY is because while the cigarette, cigar, pipe, joint, etc. is burning, it can still release an odor, cause things to burn and leave a butt or tobacco behind when it is done and thrown away. 

Your post reads like a tobacco ad telling me if I start to smoke I'll become one of the cool kids. 

We do not allow smoking anywhere on our premises, whether it is tobacco, marijuana, or moss off the trees, we don't allow it.

Actually this is a better post on ozone.http://www.biggerpockets.com/forums/67/topics/78889-smoker-rehab-keys-to-success-with-tobacco-smoke--before-after-pics

If I don't want smoking of tobacco or marijuana or crack or cloves or whatever in my unit, can I just say no to smoking to those with medical marijuana prescriptions?

I'm generalizing the phrase to encompass socially responsible investing ("do well by doing good").For example, tobacco is a legal product, but some people will not invest in companies making these products because of their negative opinion of them ("poisonous tree") and the profits made from selling them ("fruit of the poisonous tree").This thread is about racism, but the idea is the same -- where do you allocate your money (landlords run a business) and still be able to sleep well at night.

The system is clearly broken in more than one spot right now and I hope some enterprising lawyer goes big tobacco on the banks and makes a lot of class action plaintiffs rich!

Or is it redundant & the shellac should sufficiently seal in the tar/tobacco smell?

There is an enzyme spray that I was introduced to about a year ago, I forget what it was called, but it took a house from smelling like a casino in Reno (tobacco smoke) to smelling like nothing in 48 hours it was mind blowing.

I was in one of these for about a month until it came back that I tested positive for tobacco (I used to chew, yummy huh?)