evidence: Air purifying plants filtering indoor air pollutants that might lurk in your room, like formaldehyde in insulation or carpet backing, trichloroethylene from dry cleaned clothes or benzene from solvents and paints. The NASA clean air study in 1989, found that in the right conditions, some plants can absorb and trap some of these toxins and release oxygen, creating cleaner air for you to breathe. Improving indoor air quality can also help sleep issues like sleep apnea. [...] A stylish, sculptural glossy-leaf plant that looks really elegant and will also help you breathe more easily while you sleep. The Snake plant releases oxygen through the night while taking in carbon dioxide and also filters nasty common household toxins, like formaldehyde, trichloroethylene and benzene.