Electronic nose on a drone sniffs out wastewater treatment plant stink

Researchers have engineered a portable electronic nose (e-nose) that's almost as sharp as a human nose at sniffing out the stink of wastewater treatment plants. Coupled with a drone, the lightweight e-nose can measure the concentration of different smells, predict odor intensity, and produce a real-time odor map of the plant for management.

source https://www.sciencedaily.com/releases/2021/11/211116111310.htm