Farmers lung is caused due to exposure to
Bacillus subtilis
Thermoactinomyces saccharri
Aspergillus fumigates
Penicillium nalgiovense
Farmer's Lung This condition results from exposure to moldy hay containing spores of thermophilic actinomycetes that produce a hypersensitivity pneumonitis. Ref Harrison 19th edition 1691
Respiratory system