is formaldehyde a gas
Formaldehyde is a colorless, strong-smelling gas. It is used to make building materials. and household products. Formaldehyde is used to make walls, cabinets, and furniture.
Formaldehyde is a colorless, highly toxic, and flammable gas at room temperature that is slightly heavier than air. It has a pungent, highly irritating odor that is detectable at low concentrations, but may not provide adequate warning of hazardous concentrations for sensitized persons.