There are several natural ways to improve air quality in our homes, which of the following is NOT one of them?

There are several natural ways to improve air quality in our homes. Taking shoes off inside, dusting and mopping frequently, and avoiding smoking indoors are some effective ways to reduce indoor air pollution.

However, burning scented candles indoors and using scented air fresheners to cover up smells can release harmful chemicals into the air, which can negatively impact air quality. 

Therefore, burning scented candles indoors is not a natural way to improve air quality in our homes.