Years ago my room mate had a outdoor lab. One day I was watching tv with a freind and we had let him into the house. Suddenly a horrible smell came up. I looked walked over and found the worst smelling pile I have ever seen I looked over at the dog and he ran for the door. It was so bad the freind bailed and I ended up puking trying to clean it up. I yelled at the dog that day, but that was it. Still, he seemed to know how bad it was. No matter how hard we tried, he never would come in to the house agian.