Can air-filtering plants make a difference? The Railways’ previous collaboration with AiroGuard, a Nashik-based firm, in setting up an air-filtering plant using US’s National Aeronautics and Space Administration (NASA) data on plants known for generating pure air and oxygen, could offer some relief.

Certified plants like bamboo palm, spider plant, devil ivy, dwarf date palm, Boston fern, Kimberley Queen fern and Chinese evergreen have been identified as beneficial.