For years, entomologists assumed that organs on certain stink bug legs must function in the same way. Over the course of their lives, these stink bugs selectively acquire a benign, Cordyceps-related fungus that attaches and grows from these pores on their legs. Like many other insects, stink bugs are a favorite target for parasitic wasps. The fungi-carrying stink bugs mostly live in Asia and northern Africa, but it’s totally understandable if you live elsewhere and suddenly feel the need to take a shower. Across North America, the invasive brown marmorated stink bug (Halyomorpha halys) is costing billions of dollars in agricultural damage every year.