<prompt> Farmers lung is caused due to exposure toBacillus subtilisThermoactinomyces saccharriAspergillus fumigatesPenicillium nalgiovense  <response>: Farmers Lung This condition results from exposure to moldy hay containing spores of thermophilic actinomycetes that produce a hypersensitivity pneumonitis. Ref Harrison 19th edition 1691 