Description Application Sigma pseudo™ narcotic scent marijuana formulation may be used as a surrogate in the comparative study of odor profiles of real marijuana odor vs surrogate marijuana scent using multidimensional gas chromatography coupled with mass spectrometry-olfactometry (MDGC– MS-O).[1] Substitute for controlled substances in the training of narcotics detector dogs. Mimics the odor of marijuana. Packaging 1 kg in glass bottle 100 g in glass bottle Legal Information Sigma Pseudo is a trademark of Sigma-Aldrich Co. LLC