Probably researching clandestine lab setups is a good start,
summary of a story: a light industry lot next to a friend's lot grew weed and got raided - he got to see the setup - and keep what the police did not
smash (lighting, pumps, computer, controllers etc. smashed) ... giant carbon filters, ducting, fans etc.
They were apparently operating clandestinely for over a year - I visited ny friend's lot several times and never saw or smelt anything.
Of course, having an internet search history dominated by 'how to set up a clandestine lab' may be misinterpreted as intent |