My neighbours smoke outside in the back garden and the smell comes into my living room and into DS's room through our shut double glazed windows...
I acknowledge that I might be being a bit PFB about it but it smells quite strong and I don't like it. WIBU to speak to them about it? Just to ask them to move away from the house a bit? I am worried what is going to happen in the summer - we won't be able to open the windows without it smelling like a shisha cafe. 
I am not an anti smoker, I think people should be able to do what they like providing they are not hurting anyone else, I would just prefer it if they did it away from my window so they don't stink out the place. It's a rented place, so I could just tell the landlord but I think that's a bit passive aggressive... AIBU?