Pollution levels in cities have been bad, but did you know that the air quality in your home can also be bad as well? In fact, research shows that indoor air pollutants can be more dangerous than outdoor air pollutants. From cooking residue, fungal spores, to paints and varnishes, the air we breathe indoors can potentially be more polluted than outdoors. If you are concerned about health or have someone at home with asthma, you may want to get an air purifier for clean air at home. Air purifiers nowadays come with various features and functions, with an extensive range to select from. How do you go about selecting the…