The belly button, or navel, can sometimes produce unusual odors. While often a normal occurrence, this can occasionally signal a need for closer attention.
The Science Behind the Smell
The navel’s environment creates conditions conducive to odor production. It is a warm, moist, and often dark area, particularly for those with deeper “innie” belly buttons, making it an ideal breeding ground for microorganisms. Dead skin cells, sweat, lint, and natural skin oils accumulate within the belly button’s folds.
These accumulated materials serve as a food source for bacteria and fungi that naturally reside on the skin. Specific bacterial species, such as Corynebacterium and Staphylococcus, are common in the navel and contribute to body odor. As these microorganisms break down the trapped debris, they produce metabolic byproducts, including volatile sulfur compounds, which can emit a distinct, fecal-like smell.
Preventing and Managing Belly Button Odor
Maintaining proper hygiene is effective for preventing and managing belly button odor. Regular cleaning with mild soap and water is recommended as part of a daily shower routine. For deeper “innie” belly buttons, a cotton swab or the corner of a washcloth can be used gently to reach and clean the crevices, removing accumulated dirt and debris.
After cleaning, it is important to thoroughly dry the belly button area to prevent moisture buildup, which can promote microbial growth. Patting the area dry with a clean towel or cotton swab is sufficient. Avoiding harsh chemicals, strong scrubbing, or excessive cleaning is advisable, as this can irritate the delicate skin and disrupt its natural protective barrier. Lotions or creams should not be applied inside the belly button unless specifically directed by a healthcare provider, as they can contribute to a moist environment that harbors odor-causing bacteria and fungi.
When to Seek Medical Advice
While an unpleasant belly button odor is often related to hygiene, certain symptoms indicate a more serious underlying issue that requires medical attention. These symptoms include persistent strong odor despite regular cleaning, along with redness, swelling, or pain in or around the navel. Other concerning signs include warmth to the touch, pus-like discharge that may be yellow, green, or dark, bleeding, or a fever.
Such symptoms can point to conditions like bacterial or fungal infections, including those caused by Candida yeast. Less common but possible causes include cysts, such as an infected urachal cyst, which is a remnant of a fetal connection between the bladder and belly button that can become infected and cause discharge and pain. If any of these symptoms are present, consulting a healthcare professional is recommended for proper diagnosis and treatment.