Before we begin, it is important to mention that the smell of menstruation can vary from one woman to another and during different stages of the menstrual cycle. However, if you are wondering why your period smells bad and has a strong, unpleasant odor, there may be a reason that needs to be addressed.

It is important to note that period odor is a topic that is often considered taboo, and it may not be possible to talk openly about it.

But it is a common reality among many people that menstrual flow can have an uncomfortable smell. Are you itchy too? Know the reasons .

There are several reasons why your period smells bad. Before telling you those reasons, let's remember that menstrual flow is made up of blood and uterine tissue that are released from the body, which can generate a characteristic metallic odor.

In addition, menstrual flow can be affected by the presence of bacteria, which can proliferate in the vaginal area and produce a foul odor.

We invite you to explore some of the reasons why you may experience unpleasant odors during your period. But first let's start with this:

What does our menstruation smell like?

The smell of blood may be barely noticeable and has a metallic tone. But why does menstruation have a different aroma? If this question has crossed your mind more than once, you are not alone. Many of us are curious about the color, smell, and appearance of menstrual flow.

It is true that blood itself does not have a very pronounced odor, however, it is important to keep in mind that menstrual flow is not composed solely of blood. At the end of the menstrual cycle, the vagina also expels endometrial tissue, fragments of the unfertilized egg, vaginal secretions, bacteria and remains of previous menstruations.

In addition, the gradual decomposition of tissues, which begins from the shedding of the endometrium until the beginning of the period, and the oxidation of menstrual blood upon contact with the external environment, must be considered.

It is important to remember that it is completely normal for menstrual blood to have an aroma (similar to blood from other areas of the body, which also has its own characteristic odor). The intensity of the smell can vary from one woman to another and is influenced by the sensitivity of smell.

Reasons why your period smells bad

Why does the period smell bad?

Vaginal infections

Vaginal infections, such as bacterial vaginosis or yeast infection, can cause a strong, unpleasant odor during your period.

These infections can upset the balance of good and bad bacteria in the vagina, which can lead to excess odor-producing bacteria.

If you suspect you have a vaginal infection, it is important to visit a healthcare professional for proper diagnosis and treatment.


Some medications and medical therapies have the ability to cause changes in vaginal pH or possibly influence hormone levels. These situations can lead to a possible intensification of the natural odor during menstruation.

If you are uncertain about this, it is recommended that you consult with your trusted doctor. If hormonal imbalances turn out to be a side effect of any medication, your doctor is the best person to provide you with precise confirmation and guidance.

Using old tampons

Prolonged use of tampons can be a cause of menstrual odor. Tampons trap menstrual blood in the vagina, which can encourage bacterial growth and cause a strong odor.

To avoid this, it is important to change tampons frequently during the menstrual cycle and consider using alternative menstrual hygiene products, such as menstrual cups or the famous cotton menstrual panties .

Using old sanitary pads

Menstrual pads are designed to absorb menstrual flow. However, unlike the Boy Short , its effective duration is not long. What does this mean? The longer you use them, the greater the breakdown of menstrual flow.

But that's not all: the contact of these pads with the skin increases the temperature in the vaginal area, thus accelerating the decomposition process of the endometrial tissue that is expelled.

It is important to note that the most effective way to combat bad odor during menstruation, in addition to maintaining adequate hygiene, is to opt for Luna Roja menstrual panties that suit your flow. Because? Because these garments are made with natural fabrics that prevent the formation of unpleasant odors.

Excessive sweating

The genital area is prone to excessive sweating. This could become a cause of the stench.

Tight clothing and tight pants can worsen sweating, which in turn can increase the stench.

To reduce the risk of excessive sweating, it is important to wear loose, breathable clothing during your period.


Why does the period smell bad?

Diet can also have an impact on menstrual odor. Spicy and garlicky foods can contribute to the strong odor, as can foods high in sugar and saturated fat.

To reduce the risk of menstrual odor, it is important to maintain a healthy and balanced diet throughout the month. See what you can and cannot eat during your period .

Vaginal obstruction

Partial blockages in the vaginal canal are not common, but they can occur. Here are some examples:

  1. During sexual activity: Although the condom is a reliable and safe barrier method, there is a possibility that it may break or come off. If a condom or its fragments become trapped in the vaginal canal, they can cause an infection that, in addition to being unpleasant in terms of smell, is unhealthy.

  2. During menstruation: The use of tampons carries the risk that cotton residue may remain in the vagina after being removed. This situation could result in a partial blockage.

These are just a few examples of rare situations in which a partial obstruction in the vaginal canal can occur. If you have concerns or suspect that a blockage may have occurred, it is important that you seek medical attention to properly address the problem and prevent any potential complications.

Intense flow discharge

The greater the amount of endometrial tissue, the more pronounced the breakdown that occurs. Added to this tissue breakdown is the combination of vaginal discharge, residue from previous menstruations, sweat, bacteria and other elements.

It is important to consider that this mixture is retained in a small, moist and closed cavity, such as the vagina, which contributes to intensifying the odor.

Sexually transmitted diseases

Some sexually transmitted diseases (STDs) can cause a foul, unpleasant menstrual odor.

While not all STDs cause noticeable symptoms, if you are experiencing a strong odor and other symptoms, it is important to get tested for STDs. If an STD is diagnosed, appropriate treatment may be prescribed to reduce the risk of complications.

Hormonal changes

Hormonal changes during the menstrual cycle can affect menstrual odor. During ovulation, for example, you may experience a stronger odor due to increased estrogen production.

However, if the odor persists beyond menstruation, it is important to consult a health professional to rule out other possible causes.

Fluctuations in vaginal pH

The pH of the vagina has the ability to vary throughout the menstrual cycle. Sometimes, these alterations can occur naturally, causing the smell of menstruation to be sweeter or more acidic than usual. Should you feel restless? Not necessarily. Natural wisdom intervenes, and the vaginal flora is responsible for restoring balance over time.

What smells should you pay attention to during your menstruation? Signs to consult a doctor

Menstruations can vary in their smell, some more noticeable than others. As we mentioned previously, this depends on your lifestyle, the menstrual protection method you choose, and the time it takes for your period to arrive.

However, not all odors are created equal, and when it comes to the menstrual cycle, the smell of rotting fish is a cause for alarm. If you detect an unpleasant odor in your menstruation, it is crucial to consult a health professional, as it is a clear indication that something is not right.

You may be facing bacterial vaginosis. An abnormal growth of bacteria in the vaginal region could trigger an uncomfortable infection that, in addition to causing a bad odor during menstruation, can cause burning when urinating, itching, inflammation and irritation.

Or, you could be dealing with another vaginal infection. In general, any vaginal infection can accentuate bad odor during menstruation. To prevent infections, it is advisable to use hypoallergenic and breathable underwear, and opt for quality menstrual panties. Our collection is designed to provide you with optimal protection. Check out all the models here .

Some recommendations to avoid those unpleasant odors

Why does the period smell bad?

✔️ Change your hygiene products frequently: Use tampons, pads or menstrual cups that fit well to your body and change them regularly to prevent blood and sweat from accumulating. Also, be sure to wash your intimate area thoroughly with mild soap and water. Therefore, you should not stop doing these hygiene habits .

✔️ Avoid hard, spicy or spicy foods: Some foods can make your sweat and body secretions smell stronger. Avoid foods with a lot of garlic, onion and spices during your period.

✔️ Wear breathable clothing: Wear cotton clothing and other breathable fabrics that allow your skin to breathe. Avoid tight clothing that can trap moisture and cause bad odors.

✔️ Use body deodorant: You can use fragrance-free body deodorant to control odors. Make sure not to apply it directly to your intimate area.

✔️ Change your underwear frequently: It is important that you change your underwear regularly to avoid the accumulation of sweat and body secretions. If you feel it is necessary, you can use panty liners to keep your intimate area cool and dry.

Remember that these odors are normal and you should not feel embarrassed by them. However, if you notice a persistent strong, unpleasant odor, you may have a vaginal infection and should consult your doctor.

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Frequent questions

Do menstrual panties help you avoid bad odor during your period?

Yes, since its technology includes several layers so that you feel comfortable, safe and leak-free, they are also manufactured to absorb unpleasant odors that we do not want to have under any circumstances. If you don't know what period panties are, check out this link here .

When is the smell of your period worrying?

If you perceive a strong and penetrating aroma, reminiscent of decomposed fish, and observe colors of your menstruation such as yellow or orange, coupled with itchy sensations in the area, it is highly likely that you are facing an infection. We recommend that you go to the doctor immediately for an evaluation and prescription of the appropriate treatment, in order to prevent its progression and worsening.

Our menstrual panties are designed for your well-being.

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