Grain dust can cause inhalation fever, asthma, chronic bronchitis, hypersensitivity pneumonitis, and COPD; [Rom, Chapters 24, 25, 26, 31, and 36] Grain dust exposure >5 mg/m3 causes acute lung function effects. [Reference #1] Grains can cause contact urticaria in agricultural workers. [Reference #2] See "Triticale allergy in a farmer." Triticale is a hybrid of rye and wheat. [
PMID 26814013] See "Exposure to field vs. storage wheat dust: different consequences on respiratory symptoms and immune response among grain workers." [
PMID 29804141]