My baby is one year old.  Until a week ago her mouth used to smell after she wakes up in the morning. But, since last week her mouth started smelling bad even during the day time several hours after she is up from sleep.  Can anyone please let me know why this happens and how this can be prevented.Thanks in advance
Hi. Welcome to Chat Doctor. As per your complaint bad smell from the mouth of a 1-year-old infant is most commonly due to poor oral hygiene leading to bacterial overgrowth and causing bad smell. It can also be due to any decaying tooth/teeth or gum infection. Persisting cold and sinus infections can be a cause. I would suggest you to consult a Periodontist and get evaluated and a thorough clinical evaluation done. In case if there is any infection then it has to be treated accordingly. In case if there is nothing ruled out then maintaining a good oral hygiene by cleaning after feeding, giving plenty of water can help. Hope this helps.