On Mar 26, 2013, to show her concern with air pollution, artist Kong Ning wears white dust-proof clothes and a mask, with her painting Smog Baby. She distributed masks to passers-by.[Photo/China Daily]

Photo taken on Feb. 22, 2014 shows a statue wearing a mask at Peking University in Beijing. Statues of sages such as Cai Yuanpei, Li Dazhao and Cervantes have had masks placed on them. The capital city during that time maintained its orange pollution alert, the second-highest alert level, as severe smog was forecast to linger in the Chinese capital for another three days.[Photo/China.com]

Healthy food for smoggy weather

Could the smog be vacuumed away?