Liver failure can cause a distinct, unpleasant breath known as foetor hepaticus, often described as sweet, musty, like garlic and rotten eggs, or even fecal/fishy, due to the buildup of toxins like dimethyl sulfide. This smell comes from sulfur compounds the failing liver can't filter, and it can also appear in sweat and urine, signaling severe liver disease, so immediate medical attention is crucial.
Foetor hepaticus is a feature of severe liver disease; a sweet and musty smell both on the breath and in urine.
Symptoms of acute liver failure may include:
Rarely, people can have bad breath because of organ failure. A person with kidney failure may have breath that smells like ammonia or urine. Serious liver disease can make breath smell musty or like garlic and rotten eggs. Compounds that are transported through the blood can also be released through your sweat glands.
Fetor hepaticus means “fetid liver” or “liver stench”. It's a type of chronic bad breath that's actually a symptom of liver disease. It has a distinctive smell — some say, like rotten eggs and garlic. It's a serious symptom.
Yet, metabolization of odorants does not only occur in the OE. Especially the liver is known as the major hub for the biotransformation of xenobiotics in humans (for further information on general metabolism within the human body see e.g. Rodrigues and Rowland, (2020) ).
Nonenal® (also known as 2-Nonenal) is a naturally occurring compound responsible for the distinct odor associated with aging. It typically appears after age 40, becoming more noticeable in both men and women.
Indole: Bacteria produce this compound by breaking down amino acids in the body's intestines. Its odor has been likened to mothballs. Dimethyl disulfide and trisulfide: Released when meat rots, these gases attract blowflies and other carrion insects to a decomposing body and smell like rancid garlic.
Liver disease can make urine smell musty, sweet, or like ammonia due to the buildup of toxins (like dimethyl disulfide/methyl mercaptan) that the failing liver can't process, leading to a specific scent known as foetor hepaticus, often accompanied by dark urine and jaundice. This ammonia-like odor comes from excess urea breakdown, while a sweet smell can also signal uncontrolled diabetes, so a medical evaluation is crucial.
The first signs of a bad liver often include persistent fatigue, nausea, loss of appetite, unexplained weight loss, and a dull ache or tenderness in the upper right abdomen. Other subtle indicators can be general malaise, feeling unwell, or mild digestive issues like bloating or fatty stools, which might be overlooked but signal the liver isn't processing nutrients properly.
Symptoms
The first symptoms of chronic or acute liver failure may include: Abdominal pain (especially in the upper right). Fatigue and malaise (feeling unwell). Nausea, vomiting and loss of appetite.
If you have liver disease, your liver may not filter out compounds that contain sulfur. This means they stay in your body, resulting in fetor hepaticus. It signals liver failure because it results from an increase in dimethyl sulfide in the air that you exhale.
Yes. Heavy drinking can leave a noticeable alcoholic smell, often described as a sweet, stale odor that lingers on the breath, skin, and clothing. This scent comes not only from alcohol itself but also from the way the body metabolizes it.
It exhibits a typical egg-white-like, marine-like odor at low concentrations, and an intense orange-citrus, animal-like odor at higher concentrations.
Pruritus is one of the most common symptoms experienced by patients with cholestatic liver disease. Pruritus associated with cholestasis is characteristically localized to the palms and soles, although generalized itching can also occur.
It has been reported that patients with liver disease: 'may acquire a sweet, musty or slightly fecal aroma of the breath, termed fetor hepaticus, which has been mainly attributed to sulfur compounds.
The three worst things for your liver are excessive alcohol, a diet high in added sugars, unhealthy fats, and salt (processed/fast foods), and overuse of certain medications (like acetaminophen/paracetamol), all leading to fat buildup (fatty liver), inflammation, and potential severe damage like cirrhosis, though lifestyle changes can often reverse early stages.
Bacterial Infections
These abscesses can result from infections in other parts of the body that spread to the liver. It is often caused by bacteria such as Escherichia coli or Klebsiella pneumoniae, and its symptoms include fever, chills, abdominal pain, and jaundice.
The smell of body decomposition can be overwhelming, especially when a body has been left unattended for an extended period. The natural breakdown process releases a complex mix of gasses and compounds—like cadaverine, putrescine, and hydrogen sulfide—that produce distinct odors.
24-72 hours postmortem: Internal organs begin to decompose. 3-5 days postmortem: Bloating occurs, with foam leakage from the nose and mouth. 8-10 days postmortem: The body changes color as abdominal gases accumulate. Several weeks postmortem: Nails and teeth loosen.
"Skin infections can present with a putrid odor from the byproducts of bacterial growth. Gangrene, which is dying tissue, has one of the most offensive odors and smells like rotting meat."
Kids start to have body odor around the time puberty starts and hormones change. Usually, this happens when females are 8–13 years old, and males are 9–14. But it can also be normal to start puberty earlier or later. Bathing every day, especially after a lot of sweating or in hot weather, can help with body odor.
Salty and sweet flavors tend to weaken first. Later, it may be more difficult to taste things that are bitter or sour. Age can also lessen the sense of smell which is strongest when people are between 30 and 60 years old. Some people eventually lose their sense of smell entirely.
Nonenal production usually starts around the age of 40 and can be exasperated by menopause or other fluctuations in hormones. The frustrating thing about Nonenal is that the smell isn't easily removed, especially from fabrics like shirt collars, sheets, and towels.