Recently, British researchers made a discovery that furthers our knowledge of bacteria and the odor producing process—a discovery that may one day lead to more effective deodorants. The biologists, at the University of York, found that several species of Staphylococcus bacteria cause the formation of the smelliest compounds. So a relatively small number of bacteria species cause an outsize portion of smelliness.
— Read more at Will a New Discovery About Body Odor Lead to Better Deodorants? at Smithsonian.