Google, google... so it is :)
It's not a run-from-the-room in a-cold-sweat phobia. More like an irrational revulsion. I can cut a chip in half, and eat the half that's not near the beans. I could probably get over it by gradual exposure, but I don't see the need. Beans are repulsive.

I'm just glad my flatmates never sponsored me to get a tin of baked beans poured on me in RAG week at uni (one of the standard options).