Jackpot!
I was afraid of dying in a fire. To be more specific, I was terrified of being trapped in a fire. Movies and tv shows with such scenes traumatised me when I was younger, and so did real-life incidents. One Chinese New Year we were on our way to visit Mom's friend and there was a fire that broke out at a plant nursery. (There was speculation about arson and insurance fraud.) It was the first time I had seen a fire that 'big', and it put the fear of fire in me.
Then came chronic pain and I realised there are worse ways to go than dying in a fire...