I don't have any advice, but I commiserate with you. I too live in a smoke-free building (under TLC Properties management) but one of my neighbors smokes all the time. Unfortunately they smoke in the evening when the management office is already closed, so there is very little that the property manager has been able to do. I'm counting down the months on my lease when I'll be looking to buy a house. I'm so done with being a renter.