When an airbnb guest got a request for almost $400 to replace a ruined mattress a few days after checking out of the short-term rental, he was very confused because he did not remember having an 'accident' on the mattress. The host even attached a photo as proof. But it didn't quite add up, so the guest did a little sleuthing and discovered that the host was trying to scam him with a four-year-old photo taken from an Internet discussion forum. #scam #airbnb #airbnbguest #airbnbhost #mattress