I met a man once who I felt a very strong clear instinct to stay away from, after he engaged me in conversation.
I wasn’t scared though and I didn’t “sense evil”, I just had an absolute knowledge that I didn’t want to engage, draw myself to his attention - it was almost a “stay invisible” kind of feeling and so definite it was as if I was receiving a firm instruction, almost like a parent voice saying “don’t talk to him” ( wasn’t a voice but the best way I can explain it!)
A friend commented that the man was staring over at me, and I just shrugged that off and didn’t even engage in conversation with her about that, just moved away and out of his eye line.
I’d have forgotten about too, it just wasn’t a big deal in terms of effect on me, if a woman hadn’t been raped and murdered two nights later, in a random attack. For a couple of reasons and details I heard, I realised it was the same man - he was caught straightaway - and it did turn out to be the one I met.
I have met people I have felt much more fearful of and have no idea if that fear was founded or not, and others who have been harmful who I didn’t feel uneasy about.
There is only one other person I have felt that specific “stay low” feeling about though since. It was a primary age child !
One that I went to tell off in the our local park, a couple of years ago, as he had been swearing at my children. An innocent looking little thing, but the way he looked at me went through me and I got that definite feeling.
I told my children “don’t bother with him if you come across him at all, don’t engage at all, good or bad, and if he says anything to you, be polite but walk away and contact me - just don’t react at all and stay away from him”.
I went home and said to my husband “That child is a psychopath”.
I don’t know that he is, but I did recently hear that he had been picked up by the police for setting fires, one which could have put lives at risk… I will always recognise that feeling now, and would value it above an actual feeling of panic or anxiety as a gut reaction to someone.