NASA discovered the space station had unhealthy levels of toxins in the air due to off-gassing from synthetic materials. The solution was using house plants to clean the air. You can do the same at home. Resilient Communities explains how.
Plants will suck these organic compounds out of the air and feed them to beneficial bacteria at their roots. Not only that, house plants will humidify the air when it gets too low.
Boston Fern and some other plants do an excellent job of getting formaldehyde out of the air.
If you want to dive into this more, get the book “How to Grow Fresh Air” by Dr. B.C. Wolverton (formerly of NASA). He’s put together a list of 50 plants you can use to clean your air.