👉 The "fumes" rule, often used in occupational health and safety, refers to the exposure limit for airborne contaminants that can cause harm to workers over time. Specifically, it sets a threshold concentration below which the risk of adverse health effects from inhaling these fumes is considered minimal. For example, in many industries, the permissible exposure limit (PEL) for certain toxic gases or particulates might be set at 0.01 milligrams per cubic meter (mg/m³) over an 8-hour workday. This rule aims to prevent chronic health issues such as respiratory problems, neurological damage, or cancer that can result from long-term exposure to harmful substances in the air.
