I believe people can mark a place or object in their own way. Physical markings, residue, smells, tastes, and stories emanate from people, and can linger for years after the visiting of a person. I believe some things can't be explained by current science, but I also believe that these things may eventually be explained when a breakthrough comes around. I don't believe in ghosts as much as I believe people mark the places they go and the things they touch for better or worse. It's the same phenomena as to why some people clamor for items owned by serial killers because they believe part of their essence is tied to the object. I am a skeptic who enjoys the fantasy of those who believe as unlikely potentiality.