Why Do My Farts Smell Bad? Fast-Acting Remedies for Embarrassing Gas (2025)

Ever wonder “why do my farts smell so bad”? While passing gas is a natural bodily function, it can sometimes feel embarrassing, especially if there’s an unpleasant odor. In most cases, you shouldn’t hold it in—especially if you’re experiencing stomach pain or any discomfort. The good news? There are quite a few solutions that can be helpful. Here, a doctor offers home remedies to nix bad-smelling gas fast.

Why do my farts smell so bad?

It likely won’t come as a surprise that dietary and digestive system issues are often the culprits behind bad-smelling intestinal gas. Experts point to the following common causes:

• Sulfur-rich foods: Foods like eggs, broccoli, cabbage, onions, garlic and red meat contain sulfur, a compound that your gut bacteria break down into hydrogen sulfide, causing a rotten egg smell, explains Andrew Boxer, MD, Gastroenterologist at Gastroenterology Associates of New Jersey.
• Dairy: If you have lactose intolerance, your body cannot fully digest lactose in dairy products. This leads to fermentation in the gut and foul-smelling farts, Dr. Boxer says.
• High-fiber foods: While fiber is an important nutrient, beans, lentils and whole grains contain complex carbohydrates that ferment in the colon, producing methane and sulfur gases, he notes.
• Artificial sweeteners: Sorbitol, mannitol and xylitol (found in sugar-free gum and candies) are poorly absorbed. When they ferment in the gut, they can trigger gas with a strong odor, Dr. Boxer explains.
• Digestive conditions: Gut imbalances may also be at play when it comes to farts that smell bad. Health conditions like small intestinal bacterial overgrowth (SIBO), Crohn’s, irritable bowel syndrome (IBS) or celiac disease or an imbalance in gut flora can cause excessive fermentation, worsening gas odor, he says.
• Certain medications: Antibiotics and certain drugs can disrupt gut bacteria or slow digestion, leading to increased gas production and odor, says David Clarke, MD, president of the Association for Treatment of Neuroplastic Symptoms.

Natural remedies to reduce bad smelling gas fast

The good news is that pungent gas is generally easy to manage. The first step is to limit consumption of any of the foods or drinks mentioned above that might exacerbate farts that smell bad and take note of whether you see an improvement.

For lasting relief, doctors recommend addressing not only the odor itself, but the underlying gas buildup. Here are a few natural methods they recommend to stop smelly gas as quickly as possible.

Activated charcoal

Activated charcoal binds to gas-producing compounds in the gut, which may reduce odor, says Dr. Boxer. He suggests taking the supplement as directed (often 500 mg capsules) before or after meals. This can work within a few hours, he notes.

Important note: Activated charcoal should not be used regularly, because the charcoal can also absorb nutrients and medications your body needs, cautions Dr. Clarke. Instead, consider taking it when you can’t avoid eating foods that you know may trigger farts that smell bad.

Peppermint or ginger

Peppermint oil relaxes the digestive tract and reduces bloating and fermentation that contributes to gas odor, explains Dr. Boxer. He suggests taking peppermint capsules before meals, and the results can take effect in one or two days.

Additionally, peppermint or ginger tea can reduce gas in general. While peppermint contains menthol, which relaxes gastrointestinal muscles and facilitates gas passage, ginger aids digestion by stimulating gastric emptying and reducing fermentation, explains Dr. Clarke.

“Drinking a cup of tea may provide relief within 30 minutes to an hour,” he says.

Probiotics

Foods like yogurt with live, active cultures, kefir or probiotic supplements help balance gut bacteria, reducing excessive fermentation, offers Dr. Boxer. It may take a few days to a week to see results.

Fennel seeds

Chewing fennel seeds after meals helps reduce gas and bloating, offers Dr. Clarke. Relief typically occurs within an hour, he says. According to research published in the International Journal of Molecular Medicine, this is because fennel seeds also contain insoluble fibers, which reduce gas production.

When to see a doctor for farts that smell bad

“Although smelly gas by itself is harmless, certain symptoms warrant medical attention,” says Dr. Clarke.

If you also experience any of the following symptoms, visit your doctor:

• Severe abdominal pain or bloating
• Persistent diarrhea or constipation
• Unexplained weight loss or loss of appetite
• Blood or mucus in your stools
• Chronic or worsening symptoms, despite home remedies

This could potentially indicate underlying conditions such as inflammatory bowel disease (IBD) or in rare cases, colorectal cancer.

This content is not a substitute for professional medical advice or diagnosis. Always consult your physician before pursuing any treatment plan.