I've had one bust open on me before. Vicky loves to squeeze the holy heck out of her food and she also somehow pulls the head of the rats while holding the read hips in her coil. Well it finally happened and she broke one open. Luckily the intestines stayed in place more or less and she swallowed it all without too much of a mess. And double lucky it was on top of her hide so I only had to scrub that thing as well as her later. But yeah, that smell sticks around for awhile.