Chemical and biological treatment of the influents in a wastewater treatment plant (STP, ETP, CETP) emit toxic gaseous odourants. These odours consist of a complex composition of gases such as Hydrogen Sulfide, Ammonia, Methyl Mercaptan, and different VOCs. Emitted odourants affect the human nervous system over a period of time and also cause a nuisance in the surrounding areas. Odour monitoring for WWTP comes in handy because they detect the various parameter levels of the noxious gaseous levels. This helps to mitigate their effect on human health as well as to optimize the treatment process. Odour monitoring at WWTP helps in identifying this issue and resolving it on time. The collected data on odour monitoring also enables authorities to take corrective measures to mitigate odour nuisance and its adverse health effects. This solution drastically reduces problem-to-action time. It identifies process issues in a wastewater treatment plant (STP, ETP, CETP) and reduces the preventive maintenance cost by on-time rectification. Odosense enables data-driven odour management in the surrounding areas.