Cooler temps help with smells,
but there is no replacement for scrubbing the air.
Negative pressure. More exhaust than intake, keeps a vacuum on the space, minimizes smell leaks.
General rule of consensus is if using passive intakes, needs 2:1 ratio. 2x the size of your active exhaust. (4" exhaust, 8" worth passive intake)
I’m sure there’s more, but that covers about every concern you listed
- Don’t tell anyone.
- Only grow in places you own
- DON’T TELL ANYONE.
- Carbon Scrubbers are your friend.
- Light leaks raise suspicion.
Handle the smell and light, and don’t tell anyone and you’ve got it made.