I live in a triplex from 1910. My 'ventilation' is opening the front and back balcony door. The outside air often stinks like skunk. It's actually pretty nauseating.
The pot-smokers tend to be neither the very regulation following kind of people, nor the kind of people who have the money for this stuff, nor people who are actually considerate enough of other people. For example, a vaporizer helps with smell, and that's a very cheap solution, but apparently rolling it so much more fun.
I meant that regulations could be enacted for those cultivating marijuana in their home, requiring proper ventilation and filtration.
Nobody wants to smell skunk all the time.