Why does my mouth smell?
- renal deficiency
- autoimmune disease (e.g. Sjӧgren syndrome)
- medication (e.g., allergy)
Snoring and mouth breathing results in more dryness of the oral cavity and consequently leads to the bad smell of the mouth in the morning. The odor may also be associated with dental problems, especially periodontal disease (gingivitis, periodontitis) due to bacteria’s accumulation. Other diseases that may be related to bad smell are allergies (when occurring frequently), diabetes, liver problems and gastroesophageal reflux.