Hi I hope these is someone that can help. My cat is 8 years old and although overweight she is otherwise healthy. Recently she started losing weight and has had a VERY foul odor coming from her feet. I have had her to the vet but they do not know what it could be. She is eating, drinking and using the litter regularly. But the smell still exists. Does anyone have any advice. I am looking forward to some ideas. Thanks.