Just like you said, there are various houseplants that can keep the air in our homes clean from pollutants and various harmful gases as well as balance indoor humidity.  I can't tell you which plant is the best, but here are several plants that you can use to clean the air in your household:     First up is the Spider plant, also known as chlorophytum comosum (as seen in the picture above). This plant is great at removing poisonous gases in your home, but be prepared that it can grow very rapid