Sure. There was a realtor who showed a house to a couple. The wife was really into the kitchen, but when she opened the oven, a little mouse ran out! The couple was startled, but the realtor just laughed it off and said, 'Well, at least you know there's no big pest problem here!'
There was this one time when a realtor was taking pictures of a house for the listing. He accidentally knocked over a vase while trying to get a good angle of the living room. The vase shattered, and just as he was panicking, the homeowner walked in. Instead of getting mad, the homeowner said, 'Well, I guess that's one less thing I have to pack!' And the realtor was so relieved. It turned out to be a funny story they both shared with future potential buyers.
Once, a realtor was trying to sell an old Victorian house. He was showing it to a potential buyer who was a bit superstitious. As they walked into the attic, a gust of wind suddenly blew the door shut. The buyer got really spooked, but the realtor quickly made a joke. He said, 'Looks like the house is trying to keep you here. It must really like you!' This actually made the buyer relax a bit and they ended up having a good conversation about the house.