This didn’t happen to me, but to my best friend when he went on a trip with his gf at the time. Hot day, road trip, stopped off at some historical site. He’s religious, but isn’t at all into ghosts, spirits, the like. So they get the quick tour.
Old house, no AC, certainly no “central-air” if it’s a historical house, but in one room, it seemed as if the temperature dropped from sweltering to comfortably cool in just seconds. Looking around for an AC vent turned up nothing, of course.
Well, his gf is feeling very uneasy, and at one point sits in this kiddie-chair and just breaks down sobbing. Almost indecipherable blubbering, either “I want my mommy” or “I want my dolly”. He’s freaking out, like what’s wrong with her?? The guide just shushes everyone away, kneels down next to her, and as if talking to a toddler, reassures her, “It’s okay baby, she’s upstairs. Just go upstairs and you’ll see her. Okay? Want me to go with you?”, and so on.
Well, the gf calms down, and is bouncing between being emotionally drained and overcome, to “wtf just happened??”. The guide later explains that [insert tragedy, forgot specifics] the ghost of this little gril occasionally makes an appearance. The kiddie-rocking-chair upstairs sometimes rocks, sometimes people can hear a kid upstairs, whether playing, talking, laughing, crying, etc., and so on. On rare occasions, people who are “sensitive” just pick up on the kid’s wavelength, and in this case, it was the gf, and the kid was upset, as she often looks for her dolly and for her mommy.
He’s still not convinced of “ghosts” or “spirits”, but at least he was open-minded enough to not trash her or the experience. Gf was still embarrassed as Hell for breaking down like that.