I can't stand mushrooms, if they were the last thing to eat on the planet. If they started boiling 1 second ago in the downstairs kitchen I immediatly smell it and get close to vomiting. Seriously, I stormed into the house the other day and a whole fucking pot of them were boiling in the kitchen. The result was a very messy floor, since I barfed the second I waltzed in.
Seafood is also a bit iffy for me, but I'm starting to slowly adapt to calamari and squids, although only fried in breadcrumbs ( is there a term for this ? ).
No wonder you hate mushrooms if said person BOILS them. Mushrooms should never be boiled.