Smoking/Girlfriend that isn’t on the lease issues

[Rick M.]

So I had a qualified tenant apply, I used Smartmove to verify him. He has good income, no evictions, quiet and a non-smoker (he also didn’t smell like smoke and also didn’t smell like an overload of cologne in hopes of masking the smell) So day one he moves in, looks like his girlfriend his helping him move in. Which I don’t mind/think of that she might be moving her stuff in as well. The unit next door they share a hallway to enter and exit the building, the tenant next door complained about the odor of smoke? Which she has a right to, I was under the impression he doesn’t smoke and the girlfriend isn’t on the lease. I do have it written about guests only staying 5 days without written consent of the LL. Apparently the girlfriend is the smoker and isn't on the lease, it hasn't been 5 days yet so I plan on waiting for that. And if this persists talk to him and then, if necessary, Post the necessary paperwork about these breaches. 

Have others had situations like this? Any advice?