A Plant-Based Fragrance-Driven Indoor Mosquito Repellent and Air-Quality Improvement System

Mosquito-borne diseases and indoor insect infestation remain major public health and environmental concerns, particularly in tropical and subtropical regions where climatic conditions favor year-round mosquito activity. Existing indoor mosquito control strategies predominantly depend on synthetic insecticides, electric vaporizers, and aerosol formulations, which have been associated with respiratory irritation, ecological toxicity, insecticide resistance, and long-term indoor chemical accumulation. Consequently, there is a growing demand for sustainable, non-toxic, and behavior-based mosquito management approaches. This study presents a plant-derived, fragrance-driven indoor mosquito repellent and air-freshening system designed as a passive, non-combustive, and electricity-free alternative to conventional chemical repellents. The proposed system operates through the controlled passive diffusion of naturally occurring volatile organic compounds (VOCs)—primarily terpenoids and aromatic phytochemicals—released from plant-based substrates under ambient airflow and light conditions. These VOCs are hypothesized to disrupt mosquito host-seeking behavior by interfering with olfactory receptor signaling pathways, thereby reducing mosquito entry, landing, and residence time within enclosed indoor spaces. In addition to insect repellency, the system is structured to enhance indoor environmental quality by maintaining low but continuous VOC concentrations within ranges commonly associated with perceived air freshness and psychological comfort in indoor environments. Unlike insecticidal approaches that target mosquito mortality, the proposed framework emphasizes non-lethal sensory interference, aligning with integrated vector management principles and minimizing ecological and human health risks. The research adopts a conceptual and design-based methodology, integrating entomological behavior models, indoor air diffusion principles, and environmental safety considerations. While quantitative repellency efficacy and emission rates are not experimentally measured in this study, the framework establishes a scientifically grounded foundation for subsequent laboratory validation, VOC profiling, and controlled field trials. The proposed system offers a low-cost, scalable, and environmentally compatible strategy for indoor mosquito management, particularly relevant to resource-limited and high-risk regions.................Please check the attachment for details