It is a mysterious science: why do some farts smell worse than others?

Everyone farts between 10 and 20 times a day.

And though it may seem like an embarrassing reality we’d rather not live with, each fart is a sign of a healthy digestive system.

However, no one fart is the same – and the smelliness can tell you something about your inner health.
Sometimes it may be loud and odourless, or smelly. Sometimes it’s really smelly. Sometimes it’s silent but deadly. For some people they’re always as smelly as rotten eggs, for others they tend to be odourless.

‘Smelly odour is not bad, it’s just a function of what you’re eating and what your bacteria is doing inside your gastrointestinal tract. Everyone is different.”

WHAT IS A FART?

A large proportion of the gas we let off during the day is carbon dioxide, which is largely odour-free. One per cent is hydrogen sulphide, generated by foods high in sulphur.

It can comes from the air we swallow or gas seeping into our intestines from the blood. Flatulence becomes concerning to doctors if it is caused by a chemical reaction in the gut, or by bacteria in the gut.

WHAT MAKES A FART SMELLY?

Smelly wind is generated when food is not processed properly – usually carbohydrates.

When carbs are not absorbed sufficiently into your intestines, particles sit in your gut and ferment. Foul smell just means the carbohydrates you consume are being malabsorbed – it’s fermented.

WHY DO SOME PEOPLE HAVE SMELLIER FARTS?

‘Some people are methane producers, and some people are hydrogen sulfide producers – which causes flatulence to smell like rotten egg,’

It’s all a function of what We eat

Doctors advise avoiding:

Apple
Pear
Watermelon
Cabbage
Asparagus
Leeks
Onions
Garlic
Avocado
Mushrooms
Cauliflower
Wheat and rye products

Doctors advise avoiding:

Bread
Pasta
Noodles
Cereal
Cakes
Dairy products

Doctors advise avoiding:

Milk
Yogurt
Ice cream
Butter
Cream
Very milky or white chocolate

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