???? ????????? : ????? ?????? ????????? ???? ??? ? ??????? ???????? ? ????? ??? ??????? ????????? ? ???? ?? ????? ????? ?? ?????? ???????.??? ???? ?????? ????? ?? ??? ?? ?????? ????? ??????? ?? ?????? ??????? ???? ??????? ?? ??????? ?????? ???????.Diketones are existing in cigarettes too, at a hundred-750 times the extent of what’s present in an