India, Nov. 4 -- A heavy, grey haze covered the Delhi-NCR area. Many people discussed the poor air quality and health risks on social media. A video of a foreigner visiting the capital city drew particular interest.

The traveller, named Shane, had journeyed from Agra to Delhi. He said pollution was so thick that he could "barely see the sun."

"It's pretty bad. I came from Agra by bus and the closer I got to Delhi, the thicker the smog was. You could definitely tell the difference. The closer I got to Delhi, it kept getting worse to the point where I could even barely see the sun anymore," Shane, a foreign national visiting India, told ANI.

Shane's experience sparked a strong reaction on social media, where users debated the city's poll...