Causes of Abnormal Smell (Odor) or Color of Your Urine (Pee)

Abnormal smell and/or color of your urine can be caused by an array of factors. Urine excreted by an otherwise hydrated healthy person does not usually have a strong smelly odor and its appearance is straw-like in color.

Some foods, vitamin supplements and medications may cause a noticeable change in your urine, for example, asparagus causes an abnormal urine odor.

Your pee odor or color changes may be only temporary, so don’t automatically assume it is a sign of a disease, condition, or infection.

Abnormal Urine Smell (Odor)

  • Foul smelling urine may be caused by bacteria, a common sign of a urinary tract or bladder infection.
  • Sweet smelling urine is a sign of diabetes or a rare disease of metabolism.
  • Musty smelling urine may be a sign of liver disease and certain metabolic disorders.
  • Ammonia smell is a concentrated urine due to dehydration.
  • Burned caramel smell is a sign of a very rare life-threatening inherited maple syrup urine disease.
  • Certain foods and medicines, including vitamins, may affect your urine’s odor ~ asparagus causes a characteristic odor.

Abnormal Urine Color

  • Cloudy, murky, turbid, muddy or rusty urine is characteristic of a urinary tract infection or bladder infection, which may also have an offensive smell.
  • Murky urine may be caused by bacteria, mucus, white blood cells or red blood cells, epithelial cells, fat, or phosphates.
  • Dark brown or clear urine may indicate a liver disorder such as acute viral hepatitis or cirrhosis.
  • Rusty to deep red urine ~ hematuria causes.
  • Pink, red, or smoky brown urine may be caused by a medication or consuming beets, blackberries or certain food colorings.
  • Pink, red, or smoky brown urine is also signs of a urinary tract disorder such as cystitis, enlarged prostate, kidney cancer, bladder tumor, tuberculosis, kidney stones, kidney infection, or a trauma to your kidneys or urinary tract.
  • Dark yellow or orange urine can be caused by laxatives or B complex vitamins or carotene or pancreatic cancer.
  • Orange urine is often caused by pyridium, rifampin, and warfarin.
  • Green or blue urine is due to the effect of artificial color in food or drug, and medications including amitriptyline, indomethacin, and doxorubicin.

Any changes in urine (pee) odor and/or color for more than a of couple days, or is repetitive (comes and goes), should be discussed with your doctor to track down the cause of this change.

Some other examinations on the subject: