sine we all come across dying trees& the like i googled the title i posted & there's quite a few sites- too many to post so you can just google this title & find common diseases and funguses for your area and decide for yourself if you want to smoke w/ it. personally iwouldn't advise it,especially for anyone w/ mold,fungus allergies or asthma. here's just 1 eastern u.s. site.
http://forestry.about.com/od/forestd..._dis_worst.htm
http://forestry.about.com/od/forestd..._dis_worst.htm