DefinitionIndustrial bronchitis is swelling (inflammation) of the large airways of the lungs that occurs in some people who work around certain dusts, fumes, smoke, or other substances.See also: BronchitisAlternative NamesOccupational bronchitisCauses, incidence, and risk factorsExposure to dusts, fumes, strong acids, and other chemicals in the air causes this type of bronchitis.