Objective:
Smoking in an apartment building causes disputes between neighbors and damages from second-hand smoke. To prevent this, the smoke free apartment was implemented in September 2016, in which corridors, staircases, elevators and underground parking lots of apartments were designated as non-smoking areas if more than one-half of residents approved the system. Therefore, an analysis was conducted through Naver Trends and news articles to understand the interest and effectiveness of the smoke free apartment.

Methods:
From January 1, 2016 to September 30, 2018, extract the search volume of ‘Smoke-Free Apartment’ via Naver Trends and looked at changes in search volume over time. In addition, the contents of 2,315 newspaper articles reported were analyzed to determine the cause of the high search volume. The article was selected as a report from Korea's 13 major daily newspapers and 12 media outlets nationwide.

Results:
Analysis of the linkage of 9 peaks and 2,315 articles over two years and eight months showed that trends were related to the topic of the article rather than the number of articles. All the articles featured in peak1, 2 and 3 where people searched the most for ‘Smoke Free Apartments’ were articles related to the smoking cessation fines. It was also important in which medium the article was written. The number of searches has increased when it is aired on national news outlets.

Conclusions:
People's interest in smoke free apartments showed a surge after news and newspapers were reported. Particularly, it shows that they are interested in content that directly affects people such as fines. However, this interest has not been sustained and often ended in a single event. Therefore, it is necessary to conduct massive publicity campaigns to attract people's attention and response.