eee ScarletSienna that's so creepy!
I don't think this is paranormal per se but I've never been able to explain it...
Before she had me and when she was pregnant, my DM lived in a little village. There was quite a large fairly fundamentalist religious community nearby and the ladies would sometimes knock on doors selling wool, craft things etc. Mum isn't religious but regularly bought wool and had a nice chat with one of the ladies. A couple of weeks after I was born, the lady arrived at the door. DM said "oh would you like to see my baby?" and invited her in. The woman looked into my cot, apparently started screaming that "she is not one of us" and legged it from the house. No one from that community ever came back.
It was a mildly funny story I got told when I was an older child - ha ha, devil child - kind of thing.
years later I had moved to a city in a different bit of the country. One of my new neighbours mentioned that there was a community of the same religion that did "door to doors" a lot. One afternoon I was at home, someone knocked, it was a woman who held out the religion's pamphlet, then looked up at me, gasped, said "you're not one of us" and started backing down the steps. I was freaked out for weeks.
DP reckons they do that to freak out anyone they just don't like the look of, but it hasn't happened to any of my neighbours as far as I know! When I told my DM she just said "well when you were a moody teenager I always told you that you were spawn of satan" 
If anyone has any explanations I'd love to hear them!