Smell from the mouth

Bad breath, or halitosis, is a symptom characterized by an unpleasant odor emanating from the mouth. It is usually caused by bacteria on the tongue, teeth, or gums. It can also be caused by poor oral hygiene, dry mouth, certain foods, smoking, or certain medical conditions. Symptoms can range from mild to severe and can vary in duration. Common manifestations include a sour, metallic, or putrid taste in the mouth, a coating on the tongue, and a feeling of dryness in the mouth. Treatment options depend on the cause and can include improved oral hygiene, medications, and lifestyle changes.