According to Sham Shui Po Community Diagnosis Study, 15% of residents smoked regularly and about 3% of students admitted they smoked occasionally. Not only smoking hazardous to health, people exposed to passive smoking were more likely to suffer from sore throats, colds, bronchitis and pneumonia. In the interest of reducing occupational hazard related to passive smoking in the workplace, protecting and improving the general health of citizens, different parties such as the Hong Kong government, Hospital Authority and Sham Shui Po District Council organized publicity and education work to promote smoke free environment. Below were some of programs / activities done by these parties.