A new study reveals that a common household chemical, widely used in cleaning products, may pose unexpected risks to human health when inhaled over prolonged periods. Researchers found evidence suggesting that exposure to the compound—often found in disinfectants and air fresheners—could contribute to respiratory irritation and potential long-term lung damage. The findings challenge previous assumptions about its safety, particularly in poorly ventilated indoor environments. Health authorities are now reviewing the data to assess whether updated guidelines for consumer use are necessary.