Belly button has a clear liquid inside. My bb already stinks, but the fluid makes it stink less. A crust forms in opening, & it hurts to touch & bend?

Smelly Belly Button. Any smell or discharge coming from the belly button can be due to an infection. The most common causes of infection in the belly button are due to piercings, fungal infections, yeast infections and obesity. If you are experiencing symptoms such as redness in the affected area, painful swelling, and curd-like discharge resulting in a smelly belly button, you should see your doctor as soon as possib.