Assemble or repair automotive brakes or clutches containing asbestos
Clean, repair, or dismantle oil-fired furnaces or boilers
Exposed to tobacco smoke working in unregulated bars, restaurants, or casinos
Generate bioaerosols of vegetable gums
Remove or replace PCB contaminated fluid in transformers
Repeatedly inhale bioaerosols containing mold (asthmogenic)
Travel to endemic area with inadequate protection
Work for railroad in 1960s or 1970s as engineer, fireman, conductor, brakeman, or hostler
Work in conditions of extreme atmospheric pressure
Work with vibrating hand tools