Most temperate species will benefit from (or at least not be harmed by)
refridgeration. Tropical species don't need refridgeration. There is
nothing special about the carnivorous trait and refridgeration of seeds
however. What are you trying to germinate?
It is generally misleading to make any generalization about CP. Remember the
catagorization of CP is very artificial and many of these plants are very
very distantly related to each other (they are all angiosperms?). About the
only safe generalizations are that they are plants that attract, capture and
digest insects - and some might even argue with that in certain cases!
Good luck
Rich