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Scientists from the University of Exeter say that a compound found in the smell of rotten eggs and human flatulence might some day be useful in mitigating the cell damage responsible in part for certain diseases.

The study, published in a recent issue of the journal Medicinal Chemistry Communications, examined the impact of hydrogen sulfide gas—which humans produce in small amounts during digestion—on cells’ mitochondria. Although the gas is noxious in large doses, scientists found that cellular exposure to smaller amounts of the compound may prevent mitochondrial damage. This could have future implications in the prevention of cancer, strokes, arthritis, heart disease, among other things, the researchers say.