What are some effective ways to reduce indoor secondhand smoke exposure?
Secondhand smoke (SHS) is a mixture of the smoke from the burning end of a cigarette and the exhaled smoke from a smoker. SHS contains more than 7,000 chemicals, many of which are harmful to human health. Exposure to SHS can cause or worsen respiratory problems, asthma, cancer, heart disease, and stroke. SHS is especially dangerous for children, pregnant women, and people with chronic conditions. According to the World Health Organization, SHS kills more than 600,000 people every year, and about 80% of them are non-smokers. Therefore, reducing indoor SHS exposure is a vital aspect of sustainable design and indoor environmental quality.