Two examples:
When I was young, if I saw an ambulance I would immediately wonder if it was taking someone I knew to the hospital. I think that eventually did stop as an adult.
The orher day I got call from out of state number I didn't know so I didn't answer. Probably spam. But I looked up the area code and saw it was a state where a close friend has a lot of family. That friend is out of town right now and also going through a divorce with a husband who is paranoid about her cheating (she's not). My knee-jerk thought was that it might have been her family calling to tell me she'd been murdered by her jealous husband.
It's not persistent paranoia. I don't spend all day worrying about it. It happens and then I move on. But that mental leap to "something terrible has happened to someone I know" without any real evidence to justify thinking it, even as a passing thought, bothers me.
Does anyone else deal with something like this?