?? ??? ????? ???? ?????? ?? ??????? ? ?? ??? ?? ??? ?? ???? ???? ???? ????? ???? ?? ?? ??? ????????? ?????? ????? ?????? ??? ??????? ???????Individuals who smoke turn out to be hooked on nicotine, a chemical in tobacco. Nicotine functions during the anxious system, where it binds to receptors and triggers the release of the chemical messenger, dopa