Neighbours , respectable youngish couple with small children, growing weed in greenhouse at end of garden . We can smell this throughout our garden and our kids don't want to be outside . It's really strong smelling and sometimes I can smell it inside our house !! Or maybe I'm imagining it now, dunno ! What would you do ? I don't know them v well, just for chit chat , moved in about year ago. Friendly enough . It is a biggish greenhouse with weed growing inside...smell drew me to notice it, and I can see the leaves growing as the top of the greenhouse is visible from our side. Bit of a dilemma. Not sure if it's for personal use or what. Don't know how to broach it but it's stopping us use the end of our garden.