My 6 month old has been on Alimentum formula (hypoallergenic) and has recently developed a case of foul smelling breath after he eats. This is a new thing, has anyone heard of this? I have no idea where to begin to find out why this might be happening. We are adding some supplements and vitamins to it per the suggestion of our naturopath, but the smell (like cat pee) persists. Can anyone help or direct?