Floral scent, composed of volatile organic compounds (VOCs) including terpenoids, benzenoids, and phenylpropanoids, plays a critical role in mediating plant-pollinator interactions. Rising global temperatures due to climate change are increasingly disrupting both the biosynthesis and emission of these floral volatiles and the olfactory capabilities of bee pollinators. This review examines the biochemical pathways underlying floral scent production, the temperature-dependent nature of VOC emission, and the physiological and behavioral consequences for bee pollinators. Research demonstrates that floral terpene emissions follow a bell-shaped temperature response curve, peaking between 25–30°C and declining at higher temperatures, with species-specific variations in sensitivity. Elevated temperatures alter both the quantity and qualitative composition of floral scent bouquets, impairing the chemical signals that bees rely upon for flower recognition. Simultaneously, heat stress reduces bee antennal olfactory sensitivity by up to 80%, further compromising pollination efficiency. This dual disruption of chemical communication threatens biodiversity, ecosystem stability, and global food security. Understanding these interactions is essential for developing adaptive strategies to mitigate the impacts of climate change on pollination services.

Keywords: Floral scent; Volatile organic compounds; Temperature; Bee pollination.