It's better we shift the industries far away from Delhi NCR region and make a safe perimeter. The problem in India is we make one place develop like it's the only place and which in turn increase the pollution level, should change that we are just concerned about economy we get from one place but not from the villages with lot greenery .
Below link gives details how agnihotra saved couple of families in Bhopal from MIC disaster
https://postcard.news/entire-city-dying-bhopal-gas-tragedy-saved-one-family-god-read-know/
This link has research done on reducing the concentration of pollutants using Agnihotra
https://www.researchgate.net/publication/281267182_AGNIHOTRA_-_A_Non_Conventional_Solution_to_Air_Pollution
What is agnihotra?
https://www.agnihotra.org/2015/02/22/what-is-agnihotra/
Step by step Agnihotra tutorial
https://www.youtube.com/watch?v=TxhFZcUL9M0&t=15s