why does my fart smell so bad

Why do my farts smell so bad?

Passing gas, especially very odorous gas, can be a humiliating experience. Gas with a foul odor can be caused by a variety of factors, ranging from minor to serious. The issue normally goes away within a day or two. It however depends on what you eat.

In this post, we’ll look at why your farts smell so bad, as well as the symptoms that may accompany passing out of smelly gas. We also look at the treatment alternatives that are available in the event that they are required.

Farting or flatulence

Flatulence is a medical word describing the release of gas from the digestive system through the anus. It is also known as farting, passing wind, or having gas. It is a natural process that occurs when gas builds up inside the digestive tract.

When your body breaks down food, gas builds up in your digestive tract. It can also happen when you eat or drink and swallow air. Oxygen, nitrogen, hydrogen, carbon dioxide, and methane are the most common components of the gas. It is something that everyone goes through.

According to the National Institutes of Health, people experience flatulence between 13 and 21 times per day on average. Excessive flatulence can be caused by a variety of illnesses, including irritable bowel syndrome, celiac disease, and gastroparesis. If you eat specific meals, you may also pass wind more regularly [source].

Gas can cause pain and bloating and interfere with your everyday activities in some situations. Gas discomfort can be alleviated by changing your diet, using medications, and exercising.

Causes of fart

Gas can be collected in two ways. When you swallow air (aerophagia) while eating or drinking, oxygen and nitrogen can build up in your digestive tract. Secondly, gasses such as hydrogen, methane, and carbon dioxide gather in the digestive tract when your body breaks down food. Flatulence can be caused by either way.

Swallowing of air

Swallowing air is a natural part of life, especially when eating and drinking. You’ll only swallow a small amount of air in most cases. If you swallow more air often, you may notice that you have a lot of flatulence. It may also cause you to burp. You may swallow more air than usual for a variety of reasons, including:

  • Gum chewing
  • Smoking
  • Dentures that are too loose
  • Sucking on items such as pen caps
  • Consuming fizzy beverages or consuming food or drink too quickly

Some food choices may cause flatulence or make your farts smell bad

Excessive flatulence may be caused by the items you eat. Carbohydrates, for example, have a history of causing gas. Carbohydrates produce more gas than proteins and lipids. However, some proteins can make the gas smell more strongly.

Among the meals that cause gas are:

  • Cabbage
  • Beans
  • Broccoli
  • Brussels sprouts
  • Whole grains
  • Milk
  • Asparagus

Some health conditions may make farts smell so bad

If you don’t eat a lot of carbohydrates or sugars, and you don’t swallow a lot of air, you might have a medical ailment causing your excessive flatulence. Flatulence can be caused by a variety of illnesses ranging from minor health difficulties to long-term digestive troubles. Among these are the following:

Why do my farts smell so bad?

There are several reasons why your farts stink. The things you eat and an imbalanced diet are the most common reasons why your farts smell so bad. There are, however, more significant reasons for foul-smelling flatulence.

Some of the major causes of foul-smelling flatulence include:

  • Food intolerance
  • Eating foods with high fiber content
  • Constipation
  • Some medications
  • Some medical conditions like infections, cancer, etc

Food intolerance

Food intolerance is one of the most common causes of foul-smelling farts. Lactose and gluten intolerances are examples of common causes of stinky farts. The body’s inability to break down lactose or gluten causes foul gas to build up and eventually be discharged in both of these disorders. Others may have food intolerance as a result of a condition like celiac disease.

Celiac disease is an autoimmune illness that affects the digestive tract and causes damage. Gluten, which is contained in wheat products, is difficult to digest for those with celiac disease.

A person with celiac disease may also have the following symptoms:

Foods with high fiber content

Many high-fiber foods can cause you to pass gas more frequently. Because these foods take longer to process in your digestive system, they ferment over time. High-fiber foods can have a strong odor; thus, your farts may have a strong odor as well. This is especially true for veggies with a strong odor, such as:

  • Broccoli
  • Asparagus
  • Cabbage

Intolerance of certain foods

Your gas may have a foul odor if you have a sensitivity or reaction to specific foods. Lactose intolerance, for example, prevents the carbohydrate lactose from being broken down. As a result, bacteria in your intestine ferment it.

Gluten sensitivity, often known as Celiac disease in its more severe form, can result in stinky farts. Celiac disease is an autoimmune disease where there is an immune response to the protein gluten. This causes intestinal inflammation and damage, resulting in malabsorption. Flatulence can be a result of this.


As certain drugs are metabolized, they might cause a person to create stinky gas. Antibiotics are one of the most common culprits. While antibiotics work to destroy infection, they may kill some of the beneficial or “good” bacteria in the digestive tract.

In the digestive tract, removing the helpful bacteria promotes an imbalance. A person may emit foul-smelling gas as a result of the imbalance. Excess gas can cause bloating and constipation, which are both unpleasant.


Constipation is a symptom of a stool (or feces) buildup in your intestines. If you can’t poop on a regular basis, bacteria and odor can grow. The ultimate result is gas that is foul-smelling and can be uncomfortable. Constipation can be treated at home with over-the-counter laxatives.

Infections and bacteria

The digestive tract is in charge of breaking down food into nutrients that can be taken into the bloodstream. It also generates waste, which is excreted by the colon. This is accomplished by a variety of mechanisms, including the presence of beneficial bacteria in the digestive tract.

The levels of bacteria in the digestive tract might become unbalanced at times, which can lead to infection. As a result of the illness, you may have the following symptoms:

  • Smelly, excessive gas
  • Abdominal discomfort
  • Diarrhea
  • Fever
  • Nausea
  • Vomiting
  • Fatigue

Colon cancer

Due to the existence of colon cancer, a person may experience excessive stinky gas, however, this is less usual. Gas can build up in the intestine due to obstructions caused by cancerous polyps or tumors. When modifications in food or medicine do not stop foul-smelling gas from happening, this is an early warning indication.

Why do I fart so much?

It’s possible that you’ll have more flatulence than usual at times. Farting more frequently might be caused by a natural physiological reaction or, in certain situations, a medical issue. There are a number of factors that can influence how much you fart, including:


Along with the wonderful changes your body undergoes when pregnant, there are also some unpleasant ones, such as increased gas production. Increased hormonal activity causes your digestion to slow down, enabling more gas to build up in your intestines.


Hormonal changes during your period can occasionally coincide with bacterial changes in your digestive tract, resulting in increased flatulence.

Health conditions

You may produce extra gas as a result of digestive system diseases. Surgery that affects the intestines could result in bacterial overgrowth and, as a result, greater intestinal gas production.

Time of day

During the day, a buildup of gas-producing foods and ingested air may cause you to be more flatulent in the evening. When the muscles in the intestines are activated, you’re also more inclined to fart. Those muscles, for example, move the stool to the rectum when you’re going to have a bowel movement. Other activities, such as exercise or coughing, might also cause flatulence.

Certain foods

Beans, broccoli, and bran are all known to cause flatulence in some people. Foods, on the other hand, do not affect everyone in the same way. If you’re worried about becoming gassy, you should be conscious of your difficult foods. You could potentially be one of the many people who lack the enzyme lactase, which is required for optimal dairy digestion. Lactose intolerance can be inherited or developed as you become older.

How to prevent smelly farts

Flatulence is a natural way for the body to get rid of waste and gas. You can get rid of smelly farts by doing the following:

  • To promote good digestion and prevent gas production, eat smaller quantities at a slower pace.
  • Drink more water to aid in the efficient removal of waste from the body.
  • To help reestablish good bacteria in your body and enhance digestion, try including probiotic foods like yogurt in your diet.
  • Beer, sparkling wine, and soda are examples of carbonated liquids that can cause gas.
  • Foods that cause odorous gas should be avoided.


A person can try to remedy flatulence at home in many circumstances. Changing your diet might often be enough to minimize or eliminate odorous gas.

These modifications may necessitate consuming less or avoiding certain foods. The foods that should be restricted or avoided differ from one person to the next.

In some circumstances, a person may discover that their medication has caused them to have smelly flatulence.

Stopping the use of over-the-counter drugs will most likely provide relief. If stinky flatulence becomes an issue with prescription medications, it’s a good idea to talk to your doctor about alternatives.


Your farts stink for a variety of reasons. The most common causes of foul-smelling farts are the foods you eat and an uneven diet. However, there are more serious causes of foul-smelling gas.

Farts that stink can be avoided and treated.


Michael Sarfo
Content Creator at Wapomu

Michael Sarfo is a graduate of the University of Ghana, Legon. He is a content creator for enochkabange.com and a writer for Wapomu

Dr. Ehoneah Obed is a registered pharmacist and a member of the Pharmaceutical Society of Ghana. He has a Doctor of Pharmacy degree from Kwame Nkrumah University of Science and Technology and has experience working in a Tertiary hospital as well as various community pharmacies. He is also a software engineer interested in healthcare technologies.

His love for helping others motivates him to create content on an array of topics mostly relating to the health of people and also software engineering content.

He is knowledgeable in digital marketing, content marketing, and a host of other skills that make him versatile enough to uplift any team he joins.

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