VOCs is the generic name for a group of compounds including ethanol, methanol, isopropyl alcohol, propylene glycol, and glycol. They are used as solvents in many cleaners and other products such as sprays. They can cause drowsiness, breathing difficulties, asthma attacks, disorientation, and headaches skin and eye irritants and can be flammable. Because they are volatile they are gaseous at room temperature, and are easily breathed in.