Air-filter mask,determines air pollution content,area-specific pollution data,air filtered area-wise.
Done, and done again.
Data from research labs across Delhi and also from ENT doctors and lung specialists was collected regarding the kinds of diseases that are prevalent.
Crazy data from the net was found and even crazier was the verification of those stats that seemed ridiculous at first glance
Added just two....got a whole lot more. for anyone wishing for a hypochondria-like symptoms.