I don’t care what people do in their own homes, but I do hate the smell of marijuana smoke, it makes me feel really nauseous and it is very pervasive.
Contacting the police is pretty extreme, and on one analysis a bit of a waste of police time.
There is quite a bit of debate about smoking generally and smoke drifting into other lots and common areas. There was a case in a NSW tribunal that held that smoking by a couple in a unit was causing a nuisance to people in other lots.
I suggest you start by speaking to the neighbours first and if that doesn’t work try the strata.