Long exposure to creosote may have adverse impact health. When you use your fireplace and the chimney has a great amount of this substance inside, you and the people around can experience skin and eye irritation. People with more sensitive skin may experience redness and possibly blistering and peeling. Even though such health problems can occur fairly rarely given the fact that people in the household are not in direct contact with creosote, you must never leave things to chance. When you maintain and clean the chimney properly, you will never have to worry about this sort of risk.