What is the cause of a foul odor from smegma on the penis?

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Last updated: May 24, 2025View editorial policy

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From the Guidelines

Smegma in the penis typically has a strong, unpleasant odor that can be described as cheesy, fishy, or sour. This smell is a result of bacterial breakdown of the natural secretions that accumulate under the foreskin in uncircumcised men or around the head of the penis in all men. The development of this odor is closely linked to hygiene practices, with neglected hygiene leading to a stronger smell. While the provided study 1 discusses the bacteriology of skin and soft tissue infections, including those that can affect the genitalia, it does not directly address the smell of smegma. However, it mentions that most cases of such infections are caused by mixed aerobic and anaerobic flora, with Staphylococcus aureus and Pseudomonas species sometimes present. Key points to consider regarding smegma and its odor include:

  • Regular cleaning of the genital area is essential to prevent smegma buildup and associated odors.
  • The use of mild soap and thorough rinsing can help avoid irritation.
  • Persistent odor despite good hygiene practices could indicate an infection requiring medical attention. Given the information available and prioritizing morbidity, mortality, and quality of life, maintaining good genital hygiene is crucial to prevent complications associated with smegma accumulation, such as inflammation and discomfort, which can impact an individual's quality of life.

From the Research

Smell of Smegma in Penis

  • The smell of smegma in the penis is not directly addressed in the provided studies 2, 3, 4.
  • Smegma is a natural substance that can accumulate under the foreskin of the penis and has a distinct odor.
  • However, the studies provided focus on antibiotic use and its association with sexually transmitted infections 2, the comparative effectiveness of different antibiotics for treating methicillin-susceptible Staphylococcus aureus infections 3, and the mechanisms of action and clinical applications of azithromycin 4.
  • There is no direct evidence in the provided studies to describe the smell of smegma in the penis.
  • It is worth noting that poor hygiene and the accumulation of smegma can lead to unpleasant odors, but this is not specifically addressed in the provided research papers 2, 3, 4.

Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

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