Avoid covering the cord area with a diaper and stick to sponge baths until the stump detaches.
Keep the umbilical cord stump clean and dry. It will shrivel and fall off within a few weeks. In the meantime, don't be surprised by a stinky smell coming from the area. Once it falls off, it will go away. Avoid covering the cord area with a diaper and stick to sponge baths until the stump detaches.