Magic Forums

I'm going to start of by telling my story, and then asking my question:

So I went to the shop today, (completely useless fact) and while I was stood in the line, a worker went past me and as he did, I felt the ground shake and felt really horrible, like I needed to get out of the area he was in and also that I didn't feel safe around this person at all, like he had done something bad or had something bad with him.

So this brings me to the question: Is it possible that I could have felt some sort of presence from this person? Or was it just some weird sort dizziness phase? (Oh yea, I felt really dizzy too, like I was literally about to fall over)