Everyone has an irrational fear of something and sometimes we grow out of it.
What were some fears you had or still have from childhood?
For me, one of my irrational childhood fears was automatically flushing toilets.
I was camping one day and had to use the bathroom and oh how I didn't realize, it was automatic, there were no flusher. As the toilet flushed on it's own, it scared the daylights out of me and I never used them again.... until I was a teenager.