What is the substance that produces vapours or fumes which irritate eyes nose and throat?

The substance that produces vapors or fumes irritating to the eyes, nose, and throat is typically a volatile organic compound (VOC) or an irritant gas. Common examples include formaldehyde, ammonia, and chlorine. These substances can be found in household cleaners, paints, and industrial emissions. Prolonged exposure can lead to more severe respiratory issues and health effects.