After installing the air purifiers at Lajpat Jagat and Gandhi Nagar markets, the East Delhi MP Gautam Gambhir on Sunday inaugurated the third giant air purifier at Krishna Nagar area. The air purifier is approximately 12 feet high and covers an area of 1,000 square meters. He said, “It will not solve the problem of pollution entirely but I cannot just sit at home and let things worsen”.