Our findings provide biomonitoring evidence that Korea's smoke-free policies effectively reduced SHS exposure, but the effects have plateaued in recent years, revealing emerging challenges to mitigate THS exposure and indoor e-cigarette use. Evidence-based smoke-free strategies reflecting real-world smoking behaviours are needed to ensure equitable protection of people who do not smoke across different exposure settings and to sustain a smoke-free environment.
Jeong et al. (Tue,) studied this question.
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