Soot or black carbon particles emanating from unregulated vehicular traffic in Chennai city (the Detroit of India) are not only short-lived climate forcers, they also contribute majorly to the problem of PM10 pollution. This paper first models the spatial distribution of these particles along a busy thoroughfare with a vehicle density of 45,272 vehicles/km·day, factoring in the vehicle deterioration factor and then suggests a practical amelioration mechanism using a Vertical Green Drape (VGD) using Vernonia elaeagnifolia. Apart from its cleansing efficiency, the creeper draped building has shown to enhance the interior thermal comfort of its occupants by bringing down the Predicted Mean Vote (PMV) value from 1.73 (uncomfortably warm) to 0.98 (comfortable) for a multi-storeyed building housing 385 occupants on a single floor. Calculations also yield annual HVAC (Heating Ventilation and Air-Conditioning) savings of 104,999.96 USD (93,333.3 KWh) for a group of three academic buildings, close to a National Highway (NH-32). © 2019, Thai Society of Higher Eduation Institutes on Environment. All rights reserved.