Halitosis is a common problem in the pediatric population. Generally is attributed to poor hygiene of the oral cavity and its teeth. Not that there may be less relevant because the notice of any organic disorder. These disorders can be as stomatitis, gingivitis, pharyngoamigdalitis, rhinitis or sinusitis.
If a young child presents bad breath, and is healthy so far to perceive this odor, some thought given to the possibility of having a foreign body inserted into their nostrils. If it does not have to be pulled. In his attempt would introduce even more. Take the child to the doctor is advisable.
If this is not the case, the root of the problem is an inadequate oral hygiene. A visit to the dentist can verify this. If the dental examination ruled out alterations or poor oral hygiene should be consulting with the pediatrician