A chemical used to treat an object, group of objects, or structure for elimination of pests or mold, and such a treatment. Camphor flakes, naphthalene, and paradichlorobenzene are three such fumigants.(pr. FYOO-mə-gənt, FYOO-mə-GAY-shən)Also see art conservation, ASTM International (American Society for Testing and Materials), Material Safety Data Sheet (MSDS), preparator, and storage.