Son is and always has been extremely hygienic if not a bit OTT sometimes although over I’d say the past three weeks I can smell something a little off. I don’t know what it could be as he has a bath once a day (or now a shower) and brushes his teeth two-three times a day. I make sure he changes into clean clothes everyday too so it’s not that. It’s not sweat either because he has it even on cold days. Is there any sort of condition that would cause this?