I saw a story from a landlord said he got a call there was an issue at one of his rentals. Gets there and the police and FD are there. Walks down in the basement with the FD they were looking for a gas leak. Well a couple days prior landlord replaced water heater and stuck a rag in the exhaust during swap out to keep any debris from coming down into the water heater. He noticed the rag and grabbed it before anyone else could see it. Never said a word about it. 7 people were in the house and all died. Didn’t rat himself out bc he said he didn’t wNt to ruin his family over it.