Bacteria or improper jewelry-wearing. That is, it was either done in an unsanitary way, you haven't been properly cleaning it, or you're wearing improper jewelry or wearing proper jewelry improperly...
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Most belly button fuzz, or belly button lint as it is often called, is a collection of stray fibers from the clothing you wear along with dead skin and body hair.
Nothing to worry about.
There is no such thing as belly button dandfruff, you probably just need to clean the inside of your belly button.
A hernia
It is infected!
Bacterial growth causes your navel to smell.
He was rumored to not have a belly button.
Did you mean belly BUTTON, not belly BOTTOM? Because "belly bottom" isn't a thing.
Out Belly Button
A belly button ring is a body piercing placed in a cauterized area of the belly button.
Your belly button is in your middle on the bottom side.
yeye
le nombril is the name for the belly button in French.
worms, reffered pain of appendicitis, displaced umbilicus.