Hi.. Welcome to HEALTHCARE MAGIC.. I have gone through your query and can understand your concern... As per your complain bad breath also known as Halitosis can occur due to a number of causes like poor oral hygiene, oral and dental infections, tonsil stones or tonsilloliths,post nasal drip, sinusitis, acid reflux,respiratory infections, digestive problems, diabetes etc.. In case if you have a problem of excessive intestinal gas formation which can be due to indigestion, therefore it can be a potent cause for bad smell from mouth.. You should consult an Oral Physician or an Otolaryngologist and get evaluated and a thorough clinical evaluation and investigations depending upon suspected cause can help in diagnosis.. Treatment of underlying cause will relieve the symptoms.. In case if excess gas is ruled out to be a culprit you will be referred to a Gastroenterologist and proper evaluations like endoscopy will help in diagnosis and treatment will be done accordingly.. As of now you should start gargling with a flavoured mouthwash twice a day.. You should chew flavored sugarfree chewing gum.. Do warm saline gargles twice a day.. Limit the intake of high aroma foods like onion and garlic.. Drink plenty of water and maintain a good oral hygiene.. Hope this information helps.. Thanks and regards.. Dr.Honey Nandwani Arora..