I've been suffering from bad breath from many years. I consulted dentist twice, they said nothing wrong with teeth and gums. He doubted I might have gastrointestinal troubles. I've gone through scaling,  but the result is same. Still I have bad breath. I brush twice daily, floss, mouth wash and brush and scrape my tongue too but it literally breath smells like feces. If i eat yogurt all day i don't smell bad that day. I'm sensitive to spicy foods it gets worse when I have milk or meat. Previously i used to take antacid it used to work now(won't be bad breath) but its not working now. Please tell me which doc should i consult it's ruining my social life