Delhi’s air quality has plunged to dangerous levels over the past few weeks, reaching one of the year’s worst phases. As the city is blanketed in thick smog, residents are struggling with respiratory issues and rushing to buy air purifiers in an attempt to keep their homes safe. But even these machines are proving powerless against the pollution.
A recently shared video captures this grim reality. It shows a man cleaning his air purifier filter after days of use. Shockingly, the filter emerges completely black, coated with thick dust and toxic particles.
He struggles to remove the dirt, as the filter has been completely clogged by the city’s polluted air. The clip vividly illustrates the severity of Delhi’s air crisis, leaving many to question
whether any part of the city remains safe to breathe in.
“Delhi Air Pollution Ground Reality when Air Purifier Filter is cleaned,” the man wrote along with the video.
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‘Air Purifier Needs Purification’
Reacting to the post, a user wrote, “Soon air purifier warranties will auto-void if used in Delhi.”
Another shared, “Air purifier needs purification.”
“Fact: out of 100, 75 most polluted cities are from India,” a comment read.
An individual stated, “Is it really the government’s fault! Our people aren’t even ready to use public transport, all need personal vehicles to move even 100 meters, we need AC everywhere, we need all the luxury that we expect from the government that it will reduce the pollution.”
Another suggested, “Wear a mask, cleaning your air filter, that’s highly concentrated particulate matter in dust. One inhale will have irreversible damage.”
One more added, “Mere desh badal raha hai peechhe chal raha hai. (My country is changing, but moving backwards).”
Experts Explain How Air Purifiers Work And Their Limits
Senior pulmonologist Dr Gopi Chand Khilnani, chairman of the PSRI Institute of Pulmonary, Critical Care and Sleep Medicine, told The Indian Express that “Air purifiers have a filter, and good air purifiers have an adsorbent which is expected to adsorb gases [by creating an adsorbate film on the surface that holds back molecules], so that the air that comes out is likely to be clean. An air purifier of good quality and capacity should cover the volume of the room. It should be on all the time. The device should be close to, and should face the person using it, so that the clean air comes directly. Most importantly, the room has to be closed all the time – its effect is nullified if the door is opened multiple times for people to come in and go out.”
“The World Health Organization (WHO), of which I am a member, does not agree that air purifiers lead to an improvement in health. But my recommendation is that for those who are elderly, or have chronic heart disease, COPD, and other lung diseases, and who stay at home, an air purifier would be helpful,” Khilnani added.
Dr Gopi Chand Khilnani further shared that it’s not easy for everyone to move out of Delhi due to affordability. But he added that those who already have serious breathing or heart problems, or who depend on oxygen, should try to stay away from the city for some time. If possible, he suggested spending six to eight weeks in a place with cleaner air to reduce health risks.


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