My brother's hamsters used to stink up our room, but they eventually all died. He could fit 10 of them into this tiny lego submarine he had, and then when one of them got loose, he managed to chew into the walls near our bathroom, where i'm positive it caused some sort of damage that is the reason the shower occasionally leaks into the kitchen! I'd rather just call an exterminator and be rid of the pests!
-Elessar