Why your farts are smelling worse than usual and how to figure out the key culprit in your diet
Funnily enough, science has found that we don’t mind the smell of our own trumps – while others’ disgust us due to an evolutionary survival instinct.
But even still, we can be left shocked by our own.
Adrienne Benjamin, a Gut Health Nutritionist at ProVen Biotics, says that “most intestinal gas is actually odourless”.
“The main gases we pass; nitrogen, hydrogen, carbon dioxide, methane and oxygen, don’t have a smell,”.
“The microbiota (gut bacteria) produce two to four litres of ‘gas’ every day, which can increase as we get older and our digestive capacity decreases along with our muscle control.
“Odour comes from trace gases produced when gut bacteria ferment undigested food, particularly sulphur-containing compounds such as hydrogen sulphide.”
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2026-04-14
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