Misophonia is actually a physical thing rather than psychological. Mostly, anyway. I have improved it a lot through exposure therapy, but it still hurts when I hear certain sounds. I can use the vacuum now! Mostly. Slow and steady.
Yeah, apparently evidence is suggesting that it's an impairment of the central nervous system. Still not a ton of research done on it yet.
I didn't know there were quieter hoods out there, though. I'll look into that. I even have a quieter-than-normal garbage disposal. These little things can make a big difference.