A total of 1014 (80.2 %) eligible respondents were males. The audience rating of the advertisement entitled “An Invisible Killer in the Office” was 23 %. Significant differences with respect to education level were observed among 238 (18.8 %) individuals who reported seeing the advertisement and among 1027 (81.2 %) participants who said that they did not see the advertisement. More than 90 % of respondents were against smoking in public places. Table 2 shows the demographic characteristics of the research participants.