A total of 140 air purifiers were reportedly purchased for Prime Minister Narendra Modi's offices and at least six other government agencies.

The purchases came after PM Modi faced criticism for not taking effective steps to improve air quality in Delhi.

Delhi CM Arvind Kejriwal had dubbed the city to be a ‘gas chamber’ last year as levels of airborne PM 2.5, tiny particulate matter that can reach deep into the lungs, far exceeded levels classified as ‘hazardous.’

The World Health Organisation had also recommended keeping windows closed when air pollution was high and also stated that air conditioners should not be used if they draw air from the outside.

The government, however, has reportedly spent 3.6 million rupees, or about $55,000, to buy air purifiers for PM Modi's offices and at least six government departments between 2014 and 2017.

Besides PM Modi's offices inside parliament house, the agencies included NITI Aayog and the ministries of health, agriculture, tourism, home affairs and foreign affairs as well.