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Causes and Treatments for Smelly Urine

Understand the common causes of smelly urine and effective treatment options. Learn how to prevent and manage smelly urine through simple lifestyle changes, hydration tips, and when to seek medical advice.

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Written by Dr. Shaik Abdul Kalam

Reviewed by Dr. Dhankecha Mayank Dineshbhai MBBS

Last updated on 25th Aug, 2025

Introduction

Have you ever noticed a strong or unusual smell when you urinate? While urine naturally has a mild odour, a sudden change in smell can sometimes indicate an underlying issue. In most cases, smelly urine is harmless and temporary, but in some situations, it may signal a health concern that needs attention.

Let’s explore the common causes of smelly urine, when to worry, and how to manage it effectively.

Common Causes of Smelly Urine

Smelly urine can be caused by:

1. Dehydration

When you don’t drink enough water, your urine becomes more concentrated, leading to a stronger ammonia-like smell. Dark yellow or orange-colored urine is a sign of dehydration.

Solution: Drink plenty of water (8-10 glasses daily) to dilute urine and reduce odour.

2. Diet and Certain Foods

Some foods contain strong-smelling compounds that pass into urine, such as:

  • Asparagus (causes a sulfur-like smell)

  • Coffee (can make urine smell stronger)

  • Garlic, onions, and spices (may alter urine odour)

  • Fish and seafood (can cause a fishy smell)

Solution: If the smell is due to food, it should go away on its own within a day. Drinking more water helps flush out these compounds faster.

3. Urinary Tract Infection (UTI)

A UTI occurs when bacteria infect the urinary tract, leading to symptoms like:

  • Strong, foul-smelling urine

  • Burning sensation while urinating

  • Frequent urge to urinate

  • Cloudy or bloody urine

Solution: UTIs require antibiotics. If you suspect a UTI, consult a doctor for proper diagnosis and treatment.

4. Diabetes or High Blood Sugar

Uncontrolled diabetes can cause sweet-smelling urine (due to excess sugar). Other symptoms include:

  • Frequent urination

  • Excessive thirst

  • Fatigue

Solution: If you notice these signs, get your blood sugar checked. Managing diabetes with diet, exercise, and medication can help.

5. Liver or Kidney Problems

Liver disease or kidney dysfunction can cause urine to smell musty or like ammonia. Other symptoms may include:

  • Swelling in legs or feet

  • Fatigue

  • Jaundice (yellowing of skin/eyes)

Solution: If you experience these symptoms, seek medical advice immediately.

6. Medications and Supplements

  • Certain medications (like antibiotics) and vitamins (especially B6 and B12) can change urine odour.

  • Solution: If the smell is due to medication, it’s usually temporary. Check with your doctor if it persists.

7. Sexually Transmitted Infections (STIs)

  • Some STIs, like trichomoniasis, can cause foul-smelling urine along with unusual discharge or discomfort.

  • Solution: Get tested if you suspect an STI. Early treatment prevents complications.

Consult Top Specialists for Personalised Tips

Dr. Rajib Ghose, General Practitioner

Dr. Rajib Ghose

General Practitioner

25 Years • MBBS

East Midnapore

VIVEKANANDA SEBA SADAN, East Midnapore

950

850

Dr. Afreen Banu Khan, General Physician/ Internal Medicine Specialist

Dr. Afreen Banu Khan

General Physician/ Internal Medicine Specialist

8 Years • MBBS, DDM (Diab). FCC (Cardio)

Chennai

Apollo Speciality Hospitals OMR, Chennai

Dr. Rama Narasimhan, General Physician/ Internal Medicine Specialist

Dr. Rama Narasimhan

General Physician/ Internal Medicine Specialist

20 Years • MBBS, MD

Chennai

Apollo Hospitals Greams Road, Chennai

1500

No Booking Fees

When to See a Doctor?

Most cases of smelly urine are harmless, but consult a doctor if you notice:

  • Persistent foul odour

  • Pain or burning while urinating

  • Blood in urine

  • Fever or back pain (sign of kidney infection)

  • Unexplained weight loss or fatigue

How to Prevent and Manage Smelly Urine?

Tips to prevent and manage smelly urine:

1. Stay Hydrated

  • Drink enough water to keep urine diluted and reduce odour.

2. Maintain Good Hygiene

  • Wash the genital area daily with mild soap.

  • Wipe from front to back after using the toilet to prevent infections.

3. Eat a Balanced Diet

  • Limit strong-smelling foods if they affect urine odour.

4. Treat Underlying Conditions

  • If smelly urine is due to infections, diabetes, or other health issues, follow your doctor’s advice for treatment.

5. Avoid Holding Urine for Too Long

  • Holding urine can lead to bacterial growth, increasing the risk of infections.

Final Thoughts

Smelly urine is usually nothing to worry about, but if it persists or comes with other symptoms, it’s best to get checked. Simple lifestyle changes like drinking more water and maintaining hygiene can help prevent unpleasant urine odour.

Consult Top Specialists for Personalised Tips

Dr. Rajib Ghose, General Practitioner

Dr. Rajib Ghose

General Practitioner

25 Years • MBBS

East Midnapore

VIVEKANANDA SEBA SADAN, East Midnapore

950

850

Dr. Swathi Reddy Perugu, General Physician/ Internal Medicine Specialist

Dr. Swathi Reddy Perugu

General Physician/ Internal Medicine Specialist

7 Years • MBBS, MD (General Medicine)

Hyderabad

Health plus, Hyderabad

625

Dr. Ramya Hari, General Practitioner

Dr. Ramya Hari

General Practitioner

18 Years • Medical Head & Family Physician, DG Shipping Approved Doctor, Panel Physician - UK Visa Medicals

Chennai

Apollo Medical Centre Kotturpuram, Chennai

1000

No Booking Fees

Dr. Afreen Banu Khan, General Physician/ Internal Medicine Specialist

Dr. Afreen Banu Khan

General Physician/ Internal Medicine Specialist

8 Years • MBBS, DDM (Diab). FCC (Cardio)

Chennai

Apollo Speciality Hospitals OMR, Chennai

Dr. Rama Narasimhan, General Physician/ Internal Medicine Specialist

Dr. Rama Narasimhan

General Physician/ Internal Medicine Specialist

20 Years • MBBS, MD

Chennai

Apollo Hospitals Greams Road, Chennai

1500

No Booking Fees

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