Inhalation fever is an acute flu-like illness that begins four to eight hours after heavy exposure to the causative dust or mist. Some symptoms include but are not limited to chest tightness, cough, fever, headache, leukocytosis, myalgia, and rhinitis. These symptoms generally resolve between 24 and 48 hours later. There are many hazardous agents that cause this disease: copper, cotton dust, diethyl zinc, endotoxins, grain dust, magnesium, magnesium oxide, polytetrafluoroethylene, and zinc oxide.