This incident is from a few days ago, when we had a visiting relative stay over with us.
It was around 11:30 p.m., and there I was, clearing away dinner and wiping down the kitchen counters etc. At this time, I was home alone as my husband and the relative (a cousin) had stepped out for a smoke. What followed was definitely odd: when in the kitchen (with my back to the doorway), I had a feeling that there was a presence/ somebody just behind me. I whipped around; of course there wasn't anyone. The feeling, though, didn't go away entirely, but I did get back to work. Again, I turned around, this time with the feeling only getting stronger. It did feel like there was an entity in the kitchen. In my head, while I did not hear voices, it did feel like there was static - the kind that appears when the telly goes on the blink. Got this bizarre feeling that had I listened more closely, I'd have heard someone speak. In any case, I did get out of the kitchen and walk into the living room, and opened the door to the house. While the feeling did go away, it was uncomfortable there too - but not as much as the kitchen.
Why I'm wondering whether an entity can follow/attach itself to a person is this: the cousin stays in India too, in a quasi-rural setting. By his own admittance, there have been multiple cases of spirits/sightings there. He said that his own apartment had an entity as well.
Back to my experience, the feeling was the strongest in the kitchen, and while I was alone. I'm not of a nervous disposition, and neither did we discuss the paranormal, that may have triggered a reaction of the sort I had.
Subsequently, during the duration of his visit, I didn't have a chance to be home alone so I can't validate whether this was just a one-off thing, or related to him/anything else.
Further, I haven't had any such experience in my apartment earlier (have been staying there almost a decade).
Any opinions/suggestions would be welcome.