Formaldehyde is traditionally used as an ingredient in the adhesive or “binding agent” of composite wood products such as particleboard, plywood, medium density fiberboard (MDF), and oriented strand board (OSB). Elevated levels of formaldehyde, which becomes a gas at room temperature, can cause burning sensations in the eye, nose, and throat; nausea; and difficulty breathing. It can trigger attacks in people with asthma and at high levels of exposure may cause some types of cancers. Certified low/no formaldehyde board products help provide a healthy indoor environment by minimizing these emissions.