A baby of 9 months should not have bad breath. There must be a reason for this. Your baby son appears to have an ear infection and may well have infected tonsils which are causing his bad breath. Please ask his doctor to see him.
The information provided does not constitute a diagnosis of your condition. You should consult a medical practitioner or other appropriate health care professional for a physical exmanication, diagnosis and formal
advice. Health24 and the expert accept no responsibility or liability for any damage or personal harm you may suffer resulting from making use of this content.