By what ? (We have ghosts. Does that count ?)
Ghosts are perfectly fine - generally they respect you and you respect them. They're like transparent flatmates who don't eat your food, don't leave the seat up and don't shuffle your decks. If one is distressed (and anger is a form of distress), then show them how to move on. Otherwise, I'm perfectly happy to share space with them.
I find my ghosts are not actually building-specific, they're specific to me. They're all either individuals I've known who have died, or ancestors, or teaching-spirits, and in one case several years ago, an individual who didn't die but was in a coma for weeks. I like to think of them all as my Imaginary Friends, and when I feel one or more of them around, I have the Warm Fuzzies. I know them all as individuals. I'm happy to have all of them around.
This house I've just moved into, in which a very ill woman died, has no ghosts. My invisible friends took only a day or two to get comfortable, and they're more comfortable now I have "their stuff" unpacked.