Why does my mother smell like old eggs?

Old eggs give off a smell like sulphur. Some clothing insecticides/deterrents like mothballs have this odour. Individual odortypes are genetically determined. Studies reveal that some women's body odor contains high levels of a sulfurous compound while men's often have high levels of fatty acid. Everyone has their own individual body odor, but some types of smells may reveal certain health problems. It is known that if your sweat smells like bleach, it may indicate kidney ailments, while fruity body odor often points to diabetic problems.