A new study reveals that a common household chemical, often found in cleaning products, may pose unexpected risks to human health when inhaled over prolonged periods. Researchers examined exposure levels in typical indoor environments and identified potential links to respiratory irritation and long-term lung function decline. The findings suggest that even low concentrations of the compound could accumulate indoors, raising concerns for families and workers frequently using such products. Health authorities are now reviewing safety guidelines, though experts emphasize the need for further investigation before drawing definitive conclusions.