Hong Kong's pollution problem hits health and businesses
16 January 2013 Last updated at 05:56 GMT
Air pollution in China has been making news headlines much of this week, and it is a problem shared with Hong Kong which is now seeing its impact on businesses.
Campaigners say some 3,000 people prematurely die from poor air quality a year.
The territory's leader, CY Leung, has announced a $1.3bn (£810m; 977m euros) subsidy programme to help phase out heavy polluting vehicles.
Jennifer Pak reports.