I've never had the "breath" thing, neither tasting nor smelling. I bugged my DH to kingdom come when I fist went Atkins, asking him about bad breath--he always said "no" and believe me, the way I hounded him, he would have told me just to get me off his back!

dark urine: mine is almost clear throughout the day, "darkest" in the morning but not even really dark then

but that's just my experience