👉 Hammer fumes are a type of airborne particulate matter generated when metalworking fluids containing fine metal dust, primarily from welding and machining operations, evaporate or vaporize in poorly ventilated environments. These tiny particles, often less than 0.1 microns in size, can become suspended in the air and pose significant health risks to workers, including respiratory issues, lung inflammation, and long-term damage such as pneumoconiosis (metal lung disease). The term "hammer fumes" is particularly associated with jobs involving heavy machinery like drills, grinders, and welders, where the repetitive striking of metal against metal or against a workpiece releases these harmful particles into the air. Proper ventilation and protective measures are crucial to minimize exposure and safeguard worker health.