Maybe a dead rat but a pet hamster isn't going to do any harm. Not unless you eat it or something.
I didn't want that to sound too funny because of the dead hamster/you being worried...but now I read it back...does sound kinda funny
You'll be grand. Does you housemate know about her hamster?
my hamster, brian, died a few months ago... was gutted
i cried like a baby
xx