May 15, 2012 The smell of your cat's urine could be affected by what she's eating, too. The ammonia compound in urine is a byproduct of protein ... cats to cover their feces and reducing the growth of bacteria that cause odor. ... Plant-based litter is comprised of environmentally friendly pellets made of things like pine or.... For babies and toddlers, do a smell check of their diaper to see if the urine smells ... or blood in the urine, is fairly common and UTIs and typically doesn't signif