5 thoughts on “Air Pollution: Why Delhi people are not advised to wear face mask? Doctors mistake.

  1. Gas masks are also worn in other parts of the world,but of the cartridge type used to block sulphur gas,and other carcinogens.Nickel smelters requires all employees carry one.
    As shown above,when the public is affected by industrys,such as coal generating hydro plants, or steel plants.
    Thank you for your comments


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