Christmas and New Year is a time when many people will be at home. Being indoors can give us a degree of protection from outdoor air pollution, but it can also trap pollution we produce inside our homes.
Risks from secondhand tobacco smoke are well known and the effect is perhaps best seen by comparison of health data before and after indoor smoking bans. A study of 47 indoor smoking bans in public spaces found hospital admissions for heart attacks decreased by an average of 12%, but people are less aware of other indoor pollutants and how to minimise them.
