“How to Grow Fresh Air” is a nonfiction book about plants’ ability to remove common office and household toxins from our indoor air. The book had two parts: 31 pages on how plants purify the air and what the research said about which plants are best at removing common air pollutants; and 100 pages with details about the 50 house plants.
https://www.amazon.com/How-Grow-Fresh-Air-Plants/dp/0140262431