A young child should obviously not have bad breath. There are usually many causes for this from chronic mouth breathing due to a blocked nose,tooth decay, tonsillitis,sinusitis, gum infection to yeast infection of the throat. He has to be checked to be sure that none of these causes is responsible for his bad breath. A visit to the dentist would be a good start.
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.