A comprehensive aroma active volatilome of S. portentosum is presented and the main odour compounds were 3-chloroindole responsible for the typical mothball odour, the mushroom odours oct-1-en-3-ol, methyl p-anisate having an anise-like smell, the bloomy and sweet smelling terpenes linalool and nerolidol, as well as benzylacetone and methyl hexadecanoate.