What Can You Do about the Air Pollutants at Your Own Home?

A two year study found that our homes contributed 52 percent of our exposure to PM2.5 particulates compared to 18% outdoor, according to a report in South China Morning Post on 9 June, 2017. Your home may be your refuge in Hong Kong, but for sure not from air pollution. What you can do about those nasty PM2.5 pollutions at home?