I had a housemate whose married boss was bonking her on the regular. He would park his car at the back of the house to hide it, but his wife figured it out and one day she stood outside the house and yelled for a while. I was doing nighshift and it woke me up
That was annoying, so I squeezed blocks of pet fish into the air ducts of his car, and it was amazing how well that worked and for how long. He eventually sold it for peanuts. The wife divorced him