maybe not the same kind of thing, but i used to watch a lot of scary movies..i have no idea 'how' since now i can't..i suspect it was more related to a mix of others maybe..but anyway, there are certain colors from one particular scary movie that the main character wore. if i see those two specific colors together, it creates anxiety and fear. so for me, some things aren't related to a traumatic event and can be related to things seen in movies or on TV, etc. that were unsettling/scary from years ago. it can help to have links to things like that or else i would be analyzing things to try to figure it out but most likely would have nothing to link to since i don't have a very good memory surrounding trauma events and timelines and putting pieces together.

it is the same kind of thing when certain topics or things are said. it triggers reactions that confuse me because i don't 100% know why it's a trigger, just that it causes feelings of discomfort, anxiety, and fear.