Unpleasant smell .

Patient: Hi, my mother 43 years old, she used to complain to me that she always smell an unpleasant smell like sour smell. this symptom always happen during day time, hot weather, and especially if she consumes a huge amount of food. i took her to many doctors like specialist in ear, nose and throat; and gastroenterologist.but after blood test, x ray and various kind of test. the result show normal and she only had a minor ulcer in stomach and gastric. 2 weeks ago she took rabeprazole sodium 20 mg and motilium 10mg (domperidone) for 2 days. she said she felt better. but after second appointment the doctor change the medicine to itopride hydrochloride 50mg. then i took her back to the doctor agian the doctor change back the medicine to rabeprazole sodium and motilium. but after took it for 2 days. she still smell an unpleasant smell like last time. i will really appreciated if any doctors can tell me what diseases that my mother had? and what should i do ? thanks you…

Doctor: