A systematic investigation of volatile compounds emitted from various mold species was conducted utilizing solid phase microextraction (SPME) in conjunction with gas chromatography mass spectrometry (GC/MS). This work was undertaken in an effort to characterize compounds that are potentially harmful to humans and the molds from which they originate. To this point, several mold species have been analyzed and include known varieties of Rhizopus and Penicillium, as well as, unknown mold species collected from tomato paste, bread, and an orange. Using the known mold species as a guide and the published literature, we were able to compare and match volatiles emitted from known and unknown species to identify the unknown molds.