Re: 5 violent burglars on a BBC one programme yesterday and they all had "the look@
I share the view that there are people you meet first time, passing, etc, and your internal bell just rings for no apparent reason
Confirmation bias means you don't remember the times you got it wrong.
Some decades back I worked with a guy who everybody thought was gay - man bag, thin leather tie, seriously fashionable clothes and he could accessorize(*). Nope, wife, three kids, straight as a very straight person. Looks can be very misleading.
(*) I'm trying to remember which film that joke came from.