Adult navel bleeding pus also bad smell, may be associated with poor personal hygiene habits, may also be due to umbilical cord inflammation, contact dermatitis and other causes. 1. Poor personal hygiene: If you do not pay attention to personal hygiene, especially when bathing is not reasonable to the navel area for cleaning, resulting in more dirt for a long time in the navel area accumulation, persistent irritation, may cause local infections, resulting in the navel part of the tissue edema, may cause the navel bleeding, pus and bad smell. 2. Umbilical cord infection: some adults have the bad habit of picking at the navel, resulting in navel inflammation local skin breakage, due to poor wound healing, is likely to cause bacterial infection, resulting in navel bleeding, pus, but also bad smell. 3. contact dermatitis: common in allergic people, in the navel area after contact with certain irritating items, such as contact with the metal buckle on the belt, is likely to cause an allergic reaction, may lead to skin damage in the navel area, caused by tissue oozing, resulting in navel bleeding, pus, and also a bad smell. Adults with bleeding pus and also foul odor from the navel should seek medical attention as soon as possible to confirm the diagnosis of the causative factor, and then be directed by a doctor for treatment.