Noticing a smell during your period is common, and most of the time, it’s completely normal. Period blood naturally has a scent, which can change depending on hormones, sweat, and the balance of vaginal bacteria. Sometimes, however, a stronger or unpleasant odor can be a sign of an infection or a hygiene issue—such as leaving a tampon in for too long.

Good menstrual hygiene and proper vaginal care can help reduce odor and keep you comfortable throughout your cycle.

Different Types Of Period Odor

Your vaginal environment changes throughout your cycle, and so does the scent of your period. Some smells are normal, while others may suggest something is off.

Metallic Odor

A slightly metallic scent is normal and simply reflects the presence of iron in your blood.

Rotten Odor

A foul or rotten smell may indicate that a tampon has been left inside the vagina longer than intended. If you are unsure whether you removed your tampon, gently feel for a string or check internally.

Sweet Odor

A mildly sweet scent can occur when the balance of vaginal bacteria shifts during your period. This is usually harmless.

Body Odor

Sweat glands around the genitals can mix with period blood and create a smell similar to body odor, especially if you are active or wearing tight clothing.

Fishy Odor

A fish-like smell may be linked to bacterial vaginosis (BV). This odor often becomes stronger after sex or after your period begins and may require medical treatment.

Common Causes Of Period Odor

Many factors can influence the smell of menstrual blood. Some are normal, while others may signal a problem.

Bacterial Vaginosis

BV occurs when vaginal bacteria become unbalanced. It often causes a noticeable fishy smell along with gray or watery discharge, itching, or irritation. Anyone with these symptoms should be evaluated by a healthcare provider.

Prolonged Tampon Use

A strong, rotten odor is often caused by a forgotten tampon. Leaving a tampon in too long can increase the risk of toxic shock syndrome (TSS), a rare but serious infection. If odor is accompanied by fever, confusion, rash, vomiting, or sudden feeling unwell, seek medical care immediately.

Vaginal Bacteria

Your vagina naturally contains a mix of bacteria. During menstruation, blood remains inside the vagina longer than typical bodily bleeding, giving bacteria time to interact with it. This process naturally creates scent and is usually nothing to worry about unless it becomes strong or unusual.

How To Reduce Period Odor

Good menstrual hygiene can make a big difference in minimizing odor and preventing infections.

Change Pads And Tampons Regularly

How often you need to change depends on your flow. Pads should be changed every few hours; tampons should not be worn longer than eight hours.

Practice Healthy Vaginal Care

• Wash only the vulva with water

• Avoid douching

• Do not use perfumes, sprays, or deodorizing wipes

• Wear breathable cotton underwear
  These habits help keep the natural bacterial balance stable.

Try Menstrual Cups

Menstrual cups collect blood inside the vagina and generally cause less odor than pads or tampons. They are reusable and can last years with proper cleaning.

Stay Hydrated And Wear Clean, Breathable Clothing

Hydration supports your body’s natural cleansing processes, and breathable fabrics prevent sweat buildup that can increase odor.

When To See A Healthcare Provider

A mild scent during your period is normal. However, you should seek medical advice if you notice:

• Sudden or unusually strong odor

• Itching, burning, or irritation

• Unusual vaginal discharge

• Pain during sex or urination

• Bleeding between periods

A provider may perform an examination and take a sample of vaginal fluid to check for infection.

A Quick Review

A little odor during your period is normal and nothing to feel embarrassed about. Most scents are simply caused by bacteria mixing with menstrual blood. Regularly changing pads or tampons, practicing gentle vaginal care, and staying clean and hydrated can minimize odor. If something smells unusually strong or you notice additional symptoms, it’s a good idea to get checked by a healthcare professional.