i had a roommate that was afraid of the 1st bp i had when i was 19. everytime she saw me with it outside of my room she'd sqeal/half scream and run into her room. lol. she killed my fish so i didnt care that my snake scared the daylights out of her.
i'm with your roommates on the rats in the freezer thing. i find that insanely disgusting but the seperate freeezer in your room is a really good idea. hope you dont have to re-home your bp when theres options to work with the situation your in.
good luck!