Is it normal to have a smelly belly button?

Stinky navel is generally abnormal, may be umbilical cord infection.
Belly button in normal circumstances is not odor, odor generally indicates that there is a bacterial infection at the navel, may be umbilical cord infection, in newborns, adults are less common, may be improperly disconnected from the umbilical cord, amniotic fluid contamination, umbilical cord for a long time not clean, often picking the navel and other reasons.
The diagnosis of umbilical infection is generally based on the results of routine blood tests, bacterial culture of umbilical secretions, etc. In addition to the navel odor, umbilical infection can also appear in the umbilical skin redness, swelling, pain, purulent secretions, etc. In the case of a more serious condition, the umbilical bacterial infection spreads throughout the body, but also cause fever, abdominal pain, etc., which is a certain risk to human health.
The discovery of navel odor is generally abnormal, should be early medical attention.