Peace lilies are amazing air cleaners, as studied by NASA. The added benefit of a peace lily is that it can increase room humidity by up to 5%. Increased humidity is great for breathing while asleep. Apartment Therapy says ‘Low humidity causes static electricity, dry skin and hair, increased susceptibility to colds and respiratory illness and can allow viruses and germs to thrive. 

 The species also helps to eliminate chemicals and microbes that cause allergies.