What causes bo smell?

Author: Emely Labadie  |  Last update: Tuesday, January 20, 2026

Body odor is what you smell when your sweat comes in contact with the bacteria on your skin. Sweat itself doesn't smell, but when the bacteria on your skin mix with your sweat, it causes an odor. Body odor can smell sweet, sour, tangy or like onions. The amount you sweat doesn't necessarily impact your body odor.

How do I stop my armpits from smelling?

Do
  1. wash your armpits, groin and feet at least twice a day with soap and dry thoroughly.
  2. shave your armpits regularly.
  3. use antiperspirants and deodorants.
  4. change and wash your clothes regularly.
  5. wear natural fabrics like cotton, wool and silk.
  6. wear antibacterial socks.

Why do I still smell of BO after washing?

Even after a thorough wash, some bacteria can stick around and cause odor. They thrive in warm, moist environments, making your underarms their favorite hangout spot.

What deficiency causes body odor?

What deficiency causes body odor? Zinc or magnesium deficiencies can lead to worse body odor because they affect how you metabolize foods, which influences smell.

Why do I smell of BO even though I shower?

Body odor (BO) is caused by bacteria and sweat, but it can also be influenced by factors such as hormones, certain medications, infections or other medical conditions, and the foods you eat. You can have strong body odor even if you practice good hygiene.

What causes body odor? - Mel Rosenberg

Why have I suddenly started smelling of BO?

Your body odor can change due to hormones, the food you eat, infection, medications or underlying conditions like diabetes. Prescription-strength antiperspirants or medications may help.

Why do I smell bad even with good hygiene down there?

A strong vaginal odor may be a sign of vaginitis, or it may be a temporary smell related to your hygiene, lifestyle or other changes. Take note of whether you have other symptoms. If the odor is related to an infection, you'll usually notice other changes, like vaginal itching, burning and discharge.

What hormone imbalance causes body odor?

Different hormones, different aromas

This shift can also lead to stronger body odor. Estrogen and progesterone levels fall relative to your testosterone, while cortisol tends to increase. Higher levels of both testosterone and cortisol have been linked to stronger body odor.

What vitamin kills body odor?

Vitamin D: The Secret to Staying Fresh

If you're low on it, your skin could let more bacteria do their thing, which = more body odor. Vitamin D helps your skin produce antimicrobial peptides that fight off bad bacteria, so you can stay smelling fresh.

What does thyroid sweat smell like?

Diabetes - Fruity smell. Kidney disease - Bleach-like smell. Infectious diseases - Varies with location and infection. Overactive thyroid - Sour smell.

Why do my armpits smell bad even with good hygiene?

We all have natural bacteria on our skin and that's totally normal. However, when our sweat interacts with that bacteria, it can cause the production of compounds that can have a strong smell. This is especially true in the armpits, where the warm and moist environment encourages more bacteria to grow.

How do I get rid of BO smell permanently?

The following suggestions may help:
  1. Bathe daily. Regular bathing, especially with an antibacterial soap, reduces the growth of bacteria on your skin.
  2. Choose clothing to suit your activity. For daily wear, choose natural fabrics, such as cotton, wool and silk. ...
  3. Try relaxation techniques. ...
  4. Change your diet.

What autoimmune disease causes body odor?

Trimethylaminuria (TMAU) is a rare disorder in which the body is not able to metabolize the chemical trimethylamine, and this causes body odor.

How to detox armpits?

An armpit detox is a mask that can be applied to your underarms for around 15 minutes. The mask can be made at home with common household items like baking soda and cornstarch, or some beauty brands offer their own masks or scrubs.

What does diabetic sweat smell like?

People with uncontrolled diabetes can experience a fruity or acetone-like smell (think nail polish remover) on their breath or skin. This is due to the buildup of ketones in your bloodstream, which is a byproduct of fat breakdown.

Does shaving armpits reduce smell?

Does shaving your armpits reduce body odor? Yes, shaving can help reduce body odor. Hair provides a breeding ground for bacteria, which break down sweat and produce odor. Removing hair can decrease this bacterial activity.

How to make bo smell better?

Tips for Reducing Body Odor
  1. Keep Yourself Squeaky Clean.
  2. Use Antibacterial Soap.
  3. Towel Off Well.
  4. Use 'Industrial Strength' Antiperspirants.
  5. Keep Your Clothes Clean.
  6. Cut Out or Cut Back on Certain Foods or Drinks.
  7. Other Body Odor Treatments.
  8. Other Body Odor Preventions.

What are the 10 causes of body odour?

Causes of body odour
  • being overweight.
  • consuming rich or spicy food and drink – such as garlic, spices and alcohol.
  • some types of medication – such as antidepressants.
  • certain medical conditions – a fruity smell can sometimes be a sign of diabetes, while a bleach-like smell may suggest liver or kidney disease.

Why do I smell worse after using Lume?

If you notice odor a short while after applying Lume Whole Body Deodorant, the most likely culprit is your clothing. This happens because fabrics, especially man-made ones, warm up not too long after you put them on. Any waxy, oily residue from past deodorants (and even fabric softeners and scent-boosters!)

What to eat to reduce body odor?

Leafy-green vegetables: Spinach, kale, lettuce, arugula and other leafy greens contain high levels of chlorophyll, which can neutralise odour-inducing components.

Why does it smell when I open my legs?

We get it — it's a common problem, but sometimes it can make you self-conscious (“wait, can other people smell that, too?!”) and affect your confidence. Inner thigh odor is caused by various factors, including excessive sweating, fungal infections, poor hygiene, and hormonal changes.

Why do I smell fishy after he came in me?

Vaginal odour and sex

During exercise and sexual activity, it is normal for the genitals to get sweaty and this may contribute to a stronger vaginal odour. However, if you notice a stronger fishy smelling odour after sex, it could be an infection called bacterial vaginosis (BV).

What does high estrogen smell like?

Does estrogen have a smell? Estrogen doesn't have a scent, but hormonal changes during menopause can alter body odor. As estrogen drops and testosterone becomes more dominant, sweat may attract more bacteria, leading to stronger smells, particularly during hot flashes.

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