People who can feel the presence of 'something' but can't see it, what does it feel like to you?

Recently I had a few trips to a particular mall for yumcha and buying furniture at an adjoining mall. A few times already when I pass by certain areas in the mall I feel really unsettled and feel the need to quickly walk past the area. I've asked my friends after our hangout whether they felt anything odd about this place and the answer would be no and pls don't scare us with these things. The best I can describe it suddenly there's a very oppressive unwelcoming vibe that puts you on edge and suddenly having a headache-like pressure. I suspect its because of 'something' but I have no idea for sure since the place doesn't have some known dark history like the pudu prison mall.

I recall as a kid I used to follow my parents house-hunting, and certain houses give me this same 'headache', one time as soon as I stepped in the front door, sometimes in certain rooms only. I don't always tune in to the vibe/feeling at every place I go but when a place stands out I'm usually a bit more cautious.