Men’s bad breath out of breath is very stinky may be related to the usual hygiene habits, may also be the emergence of oral diseases, gastrointestinal diseases. 1. Hygiene habits, if you often do not brush your teeth and rinse your mouth, or often eat spicy and irritating food, smelly food, may lead to men with bad breath breath stink. 2. Oral disease, clinical caries, periodontitis, gingivitis and other oral diseases in the oral cavity after food residue residue, bacterial fermentation may produce odor, so this symptom will appear. 3. gastrointestinal diseases, some patients with gastritis, gastric ulcer, reflux esophagitis and other gastrointestinal diseases, due to food digestion and absorption, food reflux may appear men with halitosis bad breath odor symptoms. If the symptoms of bad breath are obvious, it is best to actively seek medical attention to identify the cause of the disease, and follow the doctor’s instructions for treatment.