A proper one.
It is a legal substance.
There are plenty of other things going on upon which you could more properly focus your outrage.
Outrage? I think you are projecting. Regardless if it is legal it still affects people around you. Simply asking someone not to smoke around me while I am working should not be too much to ask. That you think it's okay, in fact preferable that someone should be able to blow smoke in my face, says you are a selfish, self absorbed inconsiderate person. You have the chip on your shoulder not me. All I wanted was some consideration. Since I, at times, couldn't get it then the ban was to my advantage hence the support.
Your comments reveal you to be a shallow person.