Flavoring-related bronchiolitis obliterans

Purpose of review In 2000, inhalation of butter flavoring vapors was first associated with clinical bronchiolitis obliterans among workers in microwave popcorn production. Toxicologic and epidemiologic studies in the succeeding 5 years have intervention and research implications. Recent findings Irreversible obstructive disease exists in workers throughout the microwave popcorn industry, in flavoring manufacture, and in the chemical synthesis of...