Why Does My Period Smell? Understanding Period Odor

Reviewed by a Dermatologist at the Skin Health Alliance

The menstrual cycle is a natural process, and with it comes a unique set of considerations for intimate hygiene. While some vaginal odor during your period is completely normal, understanding its causes and practicing good hygiene can help you feel fresh, confident, and prevent potential issues.

It's natural for menstrual blood to have a slight odor. This can be due to a combination of factors:

Blood and Bacteria: Menstrual blood, when exposed to air, can interact with the natural bacteria present in the vagina, leading to a distinct scent. This can sometimes be described as metallic, due to the iron in the blood.

Hormonal Changes: Fluctuations in estrogen and progesterone during your cycle can affect the vaginal pH balance, which in turn can influence odor.

Sweat and Moisture: The genital area has apocrine sweat glands, and when sweat mixes with bacteria, it can contribute to body odor, especially during your period when there's additional moisture.

Generally, period odors are not noticeable to others. However, if you notice a strong, unpleasant, or "fishy" odor, especially accompanied by other symptoms like itching, burning, or unusual discharge, it could indicate an infection like bacterial vaginosis or trichomoniasis, and you should consult a healthcare professional. A "rotten" smell could also signal a forgotten tampon.

Maintaining good intimate hygiene is crucial for comfort and preventing issues during your period.

Regular Washing is Key:

• Gentle External Cleaning: Wash the outside of your vagina (vulva) and bottom daily with warm water. The vagina is self-cleaning, so douching or washing inside the vagina is unnecessary and can disrupt its natural pH balance, potentially leading to irritation or infection.

• Mild, Unscented Products: If you choose to use soap, opt for a mild, unscented soap or body wash. Avoid harsh or perfumed soaps, sprays, and "feminine hygiene" deodorants, as these can cause irritation, allergic reactions, and disrupt the vaginal pH.

Wipe Front to Back: Always wipe from the front of your body toward the back after using the toilet to prevent bacteria from spreading from the anus to the vagina or urethra.

Change Menstrual Products Frequently:

Regular Changes: This is one of the most important steps to prevent odor and bacterial growth.

• Pads: Change sanitary pads every few hours, or more frequently if your flow is heavy.
• Tampons: Change tampons every 4 to 8 hours, and never wear a single tampon for more than 8 hours to reduce the risk of Toxic Shock Syndrome (TSS). Use the lowest absorbency tampon needed for your flow.
• Menstrual Cups: Empty and clean menstrual cups every 12 hours, or more regularly with a heavy flow.
• Period Underwear: While designed for longer wear, change period underwear more often on heavier days to prevent odor and moisture buildup.

Choose Breathable Underwear and Clothing:

Opt for underwear made from 100% cotton. Cotton is breathable and allows for better air circulation, which helps reduce moisture buildup and bacterial growth.

• Avoid Tight Clothing: Tight-fitting clothes, especially those made from synthetic fabrics, can trap heat and moisture, creating an environment conducive to bacterial growth and odor. Choose looser, breathable clothing during your period.
• Stay Hydrated: Drinking enough liquids can help wash out your urinary tract and prevent infections.
• Proper Disposal of Products:
  Always wrap used disposable products in toilet paper or their original wrapper before disposing of them in a trash bin. Never flush sanitary products down the toilet.

While some period odor is normal, pay attention to any significant changes. If you experience a strong, unpleasant, or "fishy" odor, especially if it's accompanied by itching, burning, unusual discharge (white, gray, green, or yellow), or pelvic pain, it's important to consult a healthcare professional. These symptoms could indicate an infection that requires medical attention.