Belly button piercings can develop an odor, often nicknamed “piercing funk.” A mild, cheesy, or slightly musty smell is usually a normal byproduct of the body’s natural processes. This scent does not usually indicate an infection, but rather a need for regular hygiene. The odor results from the build-up of organic materials that collect around the jewelry.
Why Piercings Develop a Smell
The biological cause of this normal smell relates directly to the skin’s constant shedding and secretion cycles. Our skin continuously produces sebum, a natural, oily substance, and sheds dead skin cells, which are mainly composed of keratinocytes. These materials accumulate around the fistula, which is the tunnel of skin created by the piercing.
The navel area naturally provides a warm, dark, and often moist environment ideal for accumulation. Bacteria and fungi, always present on the skin, break down the trapped mixture of dead skin, oil, and sweat. The waste products created by this microbial breakdown produce the unpleasant, sometimes cheesy, odor. This process is non-pathological and indicates a hygiene issue.
Recognizing When Odor Signals Infection
While mild odor is normal, a sudden or strong foul smell, particularly when accompanied by other symptoms, can signal infection or irritation. An infected piercing typically produces a noticeable discharge (pus) that is thick, discolored, and has a strong, unpleasant odor. This pus often appears yellow, green, or brown.
A true infection also causes a localized feeling of warmth or heat radiating from the piercing site, significant swelling, or redness that spreads outward from the site. Increased pain is common. Developing a fever or feeling generally unwell indicates a systemic issue. If these signs—especially thick, dark discharge, spreading redness, or heat—are present, consult a healthcare professional for diagnosis and treatment.
Daily Care and Cleaning to Prevent Funk
Preventing piercing funk requires consistent, gentle hygiene. The most recommended cleaning method involves using a sterile saline wound wash. This solution should be sprayed onto the piercing once or twice daily to flush the area. Avoid harsh products like alcohol, hydrogen peroxide, or strong antibacterial soaps, as these can irritate the sensitive fistula and delay healing.
When cleaning, gently wipe away any crusty debris using a clean, disposable product like a paper towel or cotton swab. Thoroughly rinse the area after showering to ensure no soap or shampoo residue is left behind, as this contributes to irritation. Always pat the area completely dry afterward, as moisture retention creates an environment perfect for bacterial growth and odor.
The type of jewelry material also affects odor retention. High-quality, non-porous materials such as implant-grade titanium, niobium, or 14-karat gold are less likely to harbor bacteria or cause irritation than lower-grade metals. Avoiding excessive movement or playing with the jewelry minimizes irritation and the introduction of external bacteria.