I seriously dislike our new neighbors. They smoke so much weed I can't even air my place out because…

I seriously dislike our new neighbors. They smoke so much weed I can't even air my place out because my apartment fills up with the smell of weed. I step outside my front door and it's all I smell coming from their apartment. I know is legal in the state of Washington but it clearly states in our lease agreement there is no smoking allowed on the property. I had to call the office and complain. The lady in the office even said it's not allowed on the property because most residents here pay rent with government assistance. These people clearly don't have a job they are always home. We have knocked on their door to ask a question and they were smoking in their living room while their kids answered the door. The least they could do is smoke in a different room than their kids and be considerate of neighbors that have small children. Seriously can they not hot box their apartment all day long. I don't want my child to be smelling weed nor do I want to smell it. I smoked from the age of 12-18 my smoking period is long over. If I don't smoke in front of my child I sure don't appreciate others exposing it to her even if it is just the smell. It's one thing that pisses me off the most since I became a parent. I used to not care but now that I have to be my child's voice oh does it piss me off.