_:vb50941688 . _:vb50941688 "An intrinsic asthma that is characterized by exposure to tobacco smoke and other inflammatory gases or particulate matter."^^ . _:vb50941688 . _:vb50941688 . _:vb50941688 . _:vb50941688 "url:https://www.ncbi.nlm.nih.gov/books/NBK526018/"^^ .