Hi,
I have a variety of animals, including rabbits (outside) and guineas (inside). I'd love to get a corn snake but had a middle-of-the-night panic that it would be a stupid idea what with having guineas in the house. They wouldn't be in the same room (snake wouldn't be able to see them) but I do put the guineas in the kitchen when I clean their cage, which is open-plan to the room where the snake would be. Still out of sight, but definitely within smell and sound distance.
Would knowing that there's prey (albeit oversized) nearby piss off a snake too much?