My 13 year old cat, who had bile duct surgery last week, was recovering pretty well until this morning. He threw up and I determined it was World's Best Cat litter and he has never eaten litter before. I attribute this to being nauseous. He is on two antibiotics, Zofran, and one pain med. He's having very loose stools now. Here is my question: His diarrhea does not smell bad. In fact, since he got out of the hospital 5 days ago, his poop has no noticeable odor. (WBCL says litter will just pass through him, no toxicity. The vet says keep an eye on him. Duh.) Has anyone experienced poop that does not smell?