The breathing rate over the first 12 years of life is about double that of adult breathing rate. So good air or bad air, children consume more.
For your healthy lungs, thank pre-1991 (Before Manmohan era of mindless development) Indians who were not as mindless as we are. Imagine what we gift to millions of children by rampant urban air pollution.
Greatest gift we give to our children: Suffocating air. 🙁 Yes, I am also partner in crime, like you all. 🙁
Although this is not a solution, I suggest you to have Fresh-Air-Sundays with kids. Away from urban crowd, in the laps of the nature, for weekly fresh air quota. (Y)