Olfactory Detection Range

Olfactory detection range refers to the concentration threshold at which cannabis volatile compounds become perceptible to the human olfactory system. Different terpenes and cannabinoid precursors have distinct detection thresholds—some are recognizable at extremely low concentrations (parts per billion), while others require higher saturation levels. This variation is central to how breeders develop strain profiles, as cultivation conditions, harvest timing, and post-harvest handling all influence terpene expression and sensory detectability. Understanding detection range helps explain why two genetically similar plants may present noticeably different aromatic profiles under different environmental or processing conditions. The olfactory detection range is also relevant to quality assessment, as some volatile compounds preferred in breeding work remain below typical detection threshold

Breeders working to stabilize or enhance aromatic expression within a cultivar must account for detection range—selecting for plants that exceed perceptual thresholds ensures consistent sensory profiles across harvests. Selectively breeding plants with higher volatile concentrations helps ensure their signature aromas remain recognizable in finished products.