I read about the ¨The Curtain Rod¨ sometime last year (#2). A friend of mine instead decided to have some of the sheet rock in each room, removed and put bags of fish, replaced the sheet rock and painted.
It was a rental, new girlfriend moved in, (no kids were involved) couldn´t stand the scent so broke up with the guy. He also moved out. The person who did the bad deed was the Manager of the property and a relative of my friend, so he took care of removing the dead fish.