I had one of those that was very interesing. We were called out to a house where an elderly sibling was taking care of an even more ancient sister. The neighbors had not seen either of them for a while. We got there and the fire dept broke in a window and the smell poured out. We were expecting both to be gone, but it was the caretaker that had passed leaving the frail one without help. She ended up falling out of bed trying to conatct help and laying on the floor under her mattress for a couple of days. That didn't help the smell at all. She was amazingly still alive. I think that human tenacity is facinating....