Sonicare toothbrush noises piss me off?

Whenever I hear the sound of a sonicare toothbrush running it fills me with extreme annoyance and irritation for no apparent reason. I don’t know why this is, but it’s not normal. Any ideas why?
Answers

Kat

Some noises are more irritating than others and every person is unique. I can't stand the sound of styrofoam being rubbed together and the squeaky sound it makes.

Andy C

Yes, a few. It's instinctual.