Their findings offer a cheap solution to a pervasive problem. Indoor spaces can often contain volatile organic compounds (VOCs), like acetone, benzene, and formaldehyde. VOCs are usually found in paint, furniture, dry cleaned clothes, printers, and cleaning supplies, and can cause serious health problems. Inhaling large quantities of these compounds can lead to dizziness, allergies, and asthma. In severe cases, VOCs have been connected with central nervous system damage and cancer. One common method of purifying contaminated air is with expensive air filtration systems, but this new, leafy development could soon become a viable second option.