?????? ??????? ???? ??? ??????? ?? ???? ????????? ????? ????????? : ?????? ??? ?????? ???? ????? ??? ????? ????? ?????? ?? ???? ? ??? ???????? ?? ?????? ?????? ?? ?????? ???? ?????? ?? ?????? ???????.Portland Point out University scientists documented in 2015 that vapor products manufactured significant levels of formaldehyde—even more than cigar