The concept of park furniture serving dual purposes is evolving rapidly with smart city initiatives. While traditional benches offer seating, innovators are now integrating environmental sensors into public infrastructure. Specially designed smart benches can indeed monitor various pollutants, including particulate matter (PM2.5/PM10), volatile organic compounds (VOCs), and nitrogen oxides (NOx) - though "potpourri pollution" isn't a scientific term, these benches detect mixed airborne contaminants.

These advanced benches incorporate solar-powered air quality sensors that continuously sample surrounding air. The data gets transmitted via IoT networks to cloud platforms, providing real-time pollution mapping across urban areas. Some models feature built-in displays showing local air quality indices, while others alert municipal authorities when pollution exceeds safe thresholds.

The technology addresses growing concerns about urban air quality without compromising public space aesthetics. These benches maintain traditional appearance while housing sophisticated monitoring equipment within weather-resistant casing. Cities from Singapore to Barcelona have implemented such solutions, creating distributed environmental monitoring networks without additional infrastructure.

While current models focus on common pollutants, future iterations could potentially identify specific odor compounds or floral scent elements, making the concept of "potpourri pollution monitoring" technically plausible as sensor technology advances. This represents an exciting convergence of public furniture, environmental protection, and smart city technology.