[Raralith]

It counts on where you live, but a lot of states, including California where I rent, do not allow smoking in apartments. Modifications on most apartments are not allowed either though simply because it's not your property, you are simply renting it from them.

Be that as it may though, in my old complex, I knew a few people that smoked cigarettes in their apartment. All of them had the big fan that sat angled on the ground facing out and blew smoke into that. Some smoked only in the kitchen where it had hardwood floor which is easier to clean up after. One tried that ozone purifier, but it doesn't work well since he did not have a room to dedicate smoking in therefore his whole place smelled like it. All of those that left though lost their deposits because no matter how much you try to clean up after yourself, if you smoke in your apartment for a lenght of time, it'll smell like it.