That's the bloodhound portion of the story...http://www.philly.com/philly/news/b...of_pot_from_chimney_leads_to_record_bust.html
Smell of pot from chimney leads to record bust
By Sam Wood
INQUIRER STAFF WRITER
A patrol cop with a sensitive schnoz was credited today with uprooting what authorities say is the biggest marijuana-growing operation in New Jersey's history.
That's the stupid criminal portion....Overpowered by the scent, Lucasiewicz called his squad. When backup arrived, Lucasiewicz knocked on the door of the single-story ranch house.
They were greeted by a surprised man, "the gardener, essentially, who was burning some of the unusable parts of the plants in the fireplace," Jones said.
I can't think of any "unusable parts" of the plant except maybe for the roots but those could be ground up and squeezed for the oil and used for making hashish. :idunno:
Burning the plant which has a VERY distinctive odor in a fireplace where the smoke is going to go out all over the neighborhood... uh, that's... pretty DUH! if you ask me.