When I was a kid, I used to see... lines...
I swear I am not joking, I would see thin purple, red, and white lines... smoking? off of people.
I would also see lines that were like those heat waves you see over a grill connecting people, to other people, but never more than 3 people.

It wasnt annoying, they were all see through, even more so than those shapes you see when you look away from a bright light.
Anyways, Im thinking it may have just been an eye condition or my imagination, I havent seen any lines since I had my vision fixed