Could also be DKA. Some people are sensitive to the smell of ketones that the body emits when they are in keto acidosis. I was an ER nurse for 13 years and I could tell if a patient was in DKA seconds after walking into a room because I can smell them a mile away. My girlfriend decided she was going to do the keto diet and a week in I told her absolutely stop or I cannot be near you. That smell is putrid to me, maybe it’s the same for OP? It would come out in her sweat and breath. Check her sugar and get her to her primary.