Why Does My Period Smell?

By: Rachel Peng

So…that time of the month has hit and you’ve realized something: your period blood smells. It’s totally normal and rarely explained, and no—you’re not dirty and it’s not gross—it’s just biology doing its thing! Let's break it down.

Reasons Why Your Period Smells:

1. Blood + Oxygen = Change (aka. oxidation) 

Fresh period blood doesn’t really smell. But once it leaves your body and hits the air, it reacts with oxygen. This process, called oxidation, can give it a metallic or slightly musty scent.

2. Bacteria & pH Balance

Your vagina naturally has bacteria (the good kind!) that keeps your body in balance. When the bacteria is mixed with blood and other fluids, it can create a slight odour. The smell might be stronger if your pH is off—like from sweating, tight clothes, or infections.

3. Menstrual Products Matter

Remember oxidation? Well, pads, tampons, and period underwear all affect how blood interacts with air. The longer it sits, the stronger the smell. Changing them regularly helps keep things fresh.

4. When to Be Concerned

A mild smell is totally normal, but if it’s super strong, fishy, or rotten, it might be an infection (like bacterial vaginosis). In that case, check in with a doctor! 

@apricottongirls Tips for period cramps🤍 #girls #girltips #apricotton #girlhood ♬ original sound - Apricotton | your big sisters

Big Sis Tips for a Fresher Period:

• Change your pad/tampon every 4-6 hours (this is so important)

• Try period underwear or a menstrual cup to reduce oxidation

• Stay hydrated & eat clean—your diet affects your scent!

• Wear breathable cotton underwear

• If something feels off, don’t ignore it. Your body is so smart!

At the end of the day, your period is natural, and a little smell is just part of the process. Take care of yourself, and remember that you’re amazing no matter what time of the month it is!

About the author:

Rachel is a political science student at Western University. She loves watching stand-up comedy, hiking, and shopping. Her favourite pastime? Reading Apricotton’s Big Sister Column. There’s just so much to learn!