Everything in your mind is reality and not real at the same time. If you think something is there, your mind will manifest itself with whatever you want to see. You make your own reality. Ghosts aren't real in my world. They don't exist. Period. All you need to do is say to yourself there isn't anything there and forget about it. You create your own world and reality. Nothing exists, but Everything exists at the same time. Or burn sage in your home! That's what everyone else will probably tell you. Everything is e m energy and some residual energy left over by people that have low and high vibrational energy. Some of it is negative and some positive. You attract what you're energy is vibrating at. You choose my friend. Choose wisely