What FLAVOR is their food?? I know this sounds crazy but when we adopted Lucky from the Humane Society they gave us a free bag of food (forgot the brand name) but it was veal, and let me tell you, he could clear a room! He had the smellest farts and poops and it was all related to the veal in the food.

Can you imagine how his poor stomach felt??!!

Also the cheaper brands of cat food throw in junk filler that may cause this too. Ever since we have switched to Science Diet, the smell has gotten better not gone, but better.