???? ????????? : ????? ?????? ????????? ???? ??? ? ??????? ???????? ? ????? ??? ??????? ????????? ? ???? ?? ????? ????? ?? ?????? ???????. ???? ?? ?????? ??? ???? ?????? ????????? ???????? ?????? ???????? ?? ????? ??????? ?????? ???????. Diketones are present in cigarettes far too, at 100