COPS weeded out a massive cannabis find after dopes grew more than 400 potent plants in a warehouse just yards from their police station.
Officers at Great Harwood realised something was wrong right under their noses when they smelled an overpowering stench as they travelled to and from work.
A special drugs team swooped on the warehouse behind the Blackburn Road station after they realised the smell was cannabis.
Inspector Chris Hayhurst said his officers were on cloud nine after their record find. He told the Observer: "This is a fantastic example of diligent policing.
"My officers were suspicious because of the smell and took the right steps to determine what was going on.
"This is the biggest haul of cannabis plants I have ever seen - well over 400 plants ready to go on the street."
Inspector Hayhurst, who leads Eastern Division's support unit, added: "There is no doubt that due to our actions a significant dent has been made in the cannabis market in East Lancashire."
The raid at the two-storey warehouse in Waverledge Street, which took place last Thursday, also found a sophisticated lights system used to grow the cannabis.
It came after a special helicopter crew with heat-seeking equipment was dispatched to fly over the building to confirm an "unusually large" heat source in the building.
The entire first floor was covered in plants capable of generating thousands of pounds' worth of drugs.
A 31-year-old Clitheroe man was questioned in relation to the find but released on police bail until 10 March.