When I was a young elder I studied with a younger married couple. We talked about how Satan and his demons don't want them to study and learn about Jehovah. The couple lived in a mobile home and at night they heard creaking noises and thought the demons were after them.
They told me about the noises. I assumed that they bought something from a store that sells used items which can serve as a bridge for the demons to the persons home. Nope....but I did find ceramic praying hands that belonged to a grandmother. Aha, that was the culprit. I took the praying hands outside the trailer and smashed them with a hammer.
The creaking noise did not go away, now something that belonged to a grandmother was destroyed and they stopped studying a few weeks later.
I guess at that point in time I would have believed the smurf story if a CO gave the story.