For your home, which is sometimes more polluted than the air outside due to the lack of circulation and outside air, there are some other options. There are plants that purify and oxygenate your home, there are air purifiers that you can buy, and then there are air purification systems that use plants as part of their process. Plants and plant based purifiers are more natural. They also give the benefit of adding oxygen into the air, as well. However, you need at least eight plants to properly clean and oxygenate the air for one person, so if you have limited funds or a large number of family in the house, an air purifier should work well enough.
Below are some helpful links, and if you search Google with "air purifier" or "air purifying plants", you'll find more.

http://www.secrets-of-longevity-in-humans.com/oxygen-producing-plants.html

http://www.home-dzine.co.za/Lifestyle/life-plants-airfreshner.htm

http://www.air-purifier-tdr.com/

http://dornob.com/plant-based-home-purifier-accelerates-clean-air-circulation/?ref=search

http://www.tuvie.com/greenair-ecological-air-purifier-concept/

https://enterprisecommunity.secure.force.com/greenforum/topic?id=08730000000LBMSAA4&gname=Healthy+Living+Environment