A man covers his face as he walks to work in Delhi, India, November 7, 2017.
General view of apartment blocks during heavy smog in Delhi, India, November 10, 2017.
A man stands on railway platform on a smoggy morning in New Delhi, India, November 10, 2017.
A schoolboy covers his face with a handkerchief as he waits for a passenger bus on a smoggy morning in New Delhi, India, November 8, 2017.
A man exercises in a park on a smoggy morning in New Delhi, India, November 9, 2017.
A man walks along a railway platform on a smoggy morning in New Delhi, India, November 10, 2017.
People ride a boat as seagulls fly over the waters of the river Yamuna on a smoggy morning in New Delhi, India, November 8, 2017.
A general view of New Delhi during heavy smog, India, November 10, 2017.
Vehicles drive through heavy smog in Delhi, India, November 8, 2017.
Boys wear masks on a smoggy day in New Delhi, India, November 9, 2017.
A man covers his face as he walks to work, in Delhi, India, November 7, 2017.
People exercise in a park on a smoggy morning in New Delhi, India, November 9, 2017.
A woman walks along the road on a smoggy morning in New Delhi, India, November 10, 2017.
A woman wearing a scarf to cover her face looks on as she waits for a passenger bus on a smoggy morning in New Delhi, India, November 8, 2017.
A street cleaner works in heavy smog in Delhi, India, November 10, 2017.
REUTERS/Cathal McNaughton
Indian capital shrouded in toxic smog
India plans to spray water over its capital New Delhi to combat toxic smog that has triggered a pollution emergency.