![Pollutionwatch: do face masks really prevent the ill effects of pollution? | Air pollution | The Guardian Pollutionwatch: do face masks really prevent the ill effects of pollution? | Air pollution | The Guardian](https://i.guim.co.uk/img/media/23ebff09269888bec1e21dd2d1fd67a159bbe4ad/0_267_5229_3137/master/5229.jpg?width=1200&height=1200&quality=85&auto=format&fit=crop&s=7d07eb44ee14a650e03ca692d30c9001)
Pollutionwatch: do face masks really prevent the ill effects of pollution? | Air pollution | The Guardian
![Smog over Beijing, China, people wear masks, as air pollution takes over December 19, 2015 - ABC News (Australian Broadcasting Corporation) Smog over Beijing, China, people wear masks, as air pollution takes over December 19, 2015 - ABC News (Australian Broadcasting Corporation)](https://www.abc.net.au/news/image/7043400-3x2-940x627.jpg)
Smog over Beijing, China, people wear masks, as air pollution takes over December 19, 2015 - ABC News (Australian Broadcasting Corporation)
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Life behind a mask — China′s cities still choking on smog | Environment| All topics from climate change to conservation | DW | 18.01.2018
![Beijing, China. 25th Dec, 2015. Students wearing masks walk on a smog-shrouded street for a school event in Beijing, Dec. 25, 2015. An orange alarm has been issued to alert smog and Beijing, China. 25th Dec, 2015. Students wearing masks walk on a smog-shrouded street for a school event in Beijing, Dec. 25, 2015. An orange alarm has been issued to alert smog and](https://c8.alamy.com/comp/FAA9DR/beijing-china-25th-dec-2015-students-wearing-masks-walk-on-a-smog-FAA9DR.jpg)
Beijing, China. 25th Dec, 2015. Students wearing masks walk on a smog-shrouded street for a school event in Beijing, Dec. 25, 2015. An orange alarm has been issued to alert smog and
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BEIJING-OCT. 19, 2014. Chinese girls with a face mask. Beijing raised its smog alert to orange because the air quality is a health threat. Face masks Stock Photo - Alamy
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Despite Red Alerts In 2015, Government Of China Says Slight Improvement In Beijing's Air Quality Has Been Observed : World : koreaportal
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A tourist wearing a face mask visits the Tiananmen Square in heavy smog in Beijing, China, 9 October 2014. Beijing raised its air pollution alert to Stock Photo - Alamy
![A tourist wearing a face mask against air pollution takes a selfie on the Tian'anmen Square in heavy smog in Beijing, China, 18 November 2016. A red Stock Photo - Alamy A tourist wearing a face mask against air pollution takes a selfie on the Tian'anmen Square in heavy smog in Beijing, China, 18 November 2016. A red Stock Photo - Alamy](https://c8.alamy.com/comp/W8439K/a-tourist-wearing-a-face-mask-against-air-pollution-takes-a-selfie-on-the-tiananmen-square-in-heavy-smog-in-beijing-china-18-november-2016-a-red-W8439K.jpg)