Mesh : Air Pollutants, Occupational / adverse effects Air Pollution, Indoor / adverse effects legislation & jurisprudence Bronchiolitis Obliterans / chemically induced Butter Diacetyl / adverse effects Flavoring Agents / adverse effects Food Industry / legislation & jurisprudence Government Regulation Humans Liability, Legal National Institute for Occupational Safety and Health, U.S. Occupational Diseases Occupational Exposure / legislation & jurisprudence United States United States Food and Drug Administration United States Occupational Safety and Health Administration Zea mays