But there are ways to protect yourself, such as surgical masks or even heavy duty gas masks. One Chinese company, MaiXingRen, is offering another solution: a nose mask. China's pollution is bad.

BEIJING Jan. 30, 2013— -- For the fourth time this year, a murky haze has descended over north China, leaving residents ... one of us will be wearing gas masks and carrying oxygen tanks ...

As I prepare for an upcoming trip to Beijing, both expat and Chinese friends have been sending me suggestions of the best gas mask to buy. An item considered rare or unnecessary as of late 2012 is ...