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.

Written by Dr. Shaik Abdul Kalam
Reviewed by Dr. Dhankecha Mayank Dineshbhai MBBS
Last updated on 25th Aug, 2025
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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
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
25 Years • MBBS
East Midnapore
VIVEKANANDA SEBA SADAN, East Midnapore

Dr. Swathi Reddy Perugu
General Physician/ Internal Medicine Specialist
7 Years • MBBS, MD (General Medicine)
Hyderabad
Health plus, Hyderabad

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
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
20 Years • MBBS, MD
Chennai
Apollo Hospitals Greams Road, Chennai