An<unk>  is a substance that can cause asthma in exposed people. Workplace<unk> s induce what is called occupational asthma. A 2016 study of occupational<unk> s in Australia identified 277 in 27 groups, including ammonia, latex, pesticides and wood dust.
Asthmagen
Alpha-Zearalenol
Obesogen
Elastix 
Beta-Zearalenol
Antacid
Keldur
Bolesatine