The definition of a fume is a gas or vapor that is created from the burning of a substance. Fumes are typically created from the combustion of organic materials, such as wood, coal, oil, and gasoline. Fumes can also be created from the burning of inorganic materials, such as metals, plastics, and chemicals. Fumes are typically made up of a mixture of gases, including carbon dioxide, carbon monoxide, nitrogen dioxide, sulfur dioxide, and other volatile organic compounds. Fumes can be hazardous to human health, as they can contain particles that can be inhaled and cause respiratory problems. Fumes can also cause eye, nose, and throat irritation, as well as headaches and nausea. In addition, long-term exposure to fumes can lead to serious health problems, such as cancer, heart disease, and neurological disorders. It is important to take precautions when working with or around fumes, such as wearing protective clothing and using proper ventilation.