Cirrhosis is a serious liver condition that can cause a range of unpleasant symptoms, including an unpleasant smell. The smell is often described as a combination of rotten eggs and garlic, or as a slightly sweet smell. This smell is caused by the liver's inability to filter out toxins, which can be a sign of liver disease. Other chronic conditions, such as diabetes and kidney problems, can also cause an unpleasant smell.
Trimethylamine is a compound that is increased in many patients with cirrhosis and may contribute to bad breath. Trimethylaminuria, also known as fish odor syndrome, is a disorder that causes the person who has it to have urine, breath, and sweat that smells fishy due to the body's inability to metabolize trimethylamine. Sweat secreted by people with fear or disgust can also provoke the same emotional responses in neutral subjects who smell their sweat. The hepatic fetus can be smelled when breathing and can cause asterixis in the outstretched hands of patients with hyperammonemia.
People with liver disease may experience excessive sweating and a stinky odor similar to that of rotten eggs; diabetic ketoacidosis, which is the result of increased blood sugar, causes fruity breath and a pungent body odor; and people with kidney failure may produce excessive sweat and odor due to hyperactivity of the parathyroid gland. If you notice an unpleasant smell coming from your breath or body, it could be an indication of an underlying health problem. It's important to speak to your doctor if you are concerned about any unusual smells coming from your body.