I'll bite! First, a little context. I work at the butchering facility for a small, family-owned rancher operating out of the Canadian Prairies. The facility I work at is not that old, having been built in 2015, but some
sections of the building were brought down from the ranch, which is a few hours away and has been settled by the family for well over one hundred years at this point. One of these sections is the large walk-in freezer I work alone in.
There are no windows in the freezer, but one of the most frequent spooky occurrences is person-sized shadows passing over me. Yes, sometimes my co-workers (the butchers or other front end staff) will come into the freezer for one reason or another, but there is only one entrance and, to be frank, it's a goddamn mess in there, so maneuvering in and out that quickly without me seeing them would be next to impossible. Plus, they're far too busy to be spending time pulling pranks on the hermit in the freezer. I see a lot of shapes and shadows out of the corner of my eye, too.
On several occasions, I have smelled things that are out of place but familiar: straw and manure are the two most distinct unexplained smells that will appear and disappear throughout the day. Again, the ranch itself is hours away, and there are no (live) animals on or near the property aside from a couple of cats, so I have no idea where these smells could be materializing from.
My two most unsettling experiences were being pushed from behind while bending over to pick up a box (while I was completely alone), and seeing a tall figure standing behind my boss through an open doorway while I was driving onto the property. In the case of the latter, I first assumed my boss's husband was visiting the property that morning, but when I asked her if he was there she looked surprised and said he was at home on the ranch and there was no one else in the building with her.
Some of my co-workers have also experienced strange things, namely the facility administrator, who sometimes works late and will be the only person in the building. She often reports strange noises (tapping, footsteps, groans, and even the occasional door opening or closing elsewhere in the building), and has seen what she describes as orbs on the security feed, which she can see from her desk.
I'm a fairly skeptical person, and I'm still not completely convinced that all of these things could be explained away one way or another, but, maybe, just maybe, there's no way to explain it at all.