Air pollution is not falling down to western or WHO recommended levels in the next 20-30 years in urban India. Between natural and road dust, construction activity, rising use of motorized vehicles, and agricultural chemicals use and their gas release, etc., we will live with at best PM2.5 100-200 SPM for the bulk of the year. Therefore, the need for a mask that adjusts to the type of pollution; thankfully one such mask is about to be launched.