Let’s admit it. We usually base our judgment about the quality of air on its smell. However, this may be incorrect in most cases. Nowadays, you can find numerous air fresheners, scented candles, and other products promising to make your house smell fresh all day! Though these products can eliminate undesirable odor inside your home, they may not eliminate the cause. Instead of covering up these smells with fragrant sprays that may contain harmful chemicals, it’s more important to understand the factor why your house smells in the first place.…