A survey was conducted among two classes of medical students (N = 293) at the University of Hong Kong to study their smoking habits and knowledge of and attitudes toward smoking. The response rate was 97.3%. There was only one daily smoker (0.4%) and 21 occasional smokers (7.4%). While the respondents regarded health and self-discipline as the main reasons for not smoking, the social taboo against smoking among young people might have also deterred this educated elite from smoking. Many of them failed to identify the major causal role of smoking in smoking related diseases. The potential of prevention in encountering a smoking patient seen for reasons unrelated to smoking was not fully realised. There was disagreement in the banning of cigarette advertising and in increasing the price of tobacco products. In the face of aggressive marketing by the tobacco industry in the Asia-Pacific region, every undergraduate medical curriculum should include organized instruction on smoking and its control.