About 5-6 days ago a horrible smell started in my living room. It smelld like a dead mouse and it's coming from the arm of my Sleep dogs couch. I flipped my couch and undid the upholstery on the arm and can't find it. Then I thought about a glass I saw laying on the arm of the couch and maybe the dogs spilled a glass of milk my granddaughter left on the table I've shampooed it twice to no avail. Short of putting my couch outside on my porch has anyone had a mouse die in their couch they couldn't find and if so did the smell go away