??? ???? ????? ????? ?? ???? ??????? ?????????? ?? ?????? ? ???????? ?????? ????? ?? ????? ?????? ??????????? ? ????? ????????? ????? - ???? ??? ???????? ????? Portland State University scientists documented in 2015 that vapor solutions developed superior levels of formaldehyde—a lot more than cigarettes.???? ????????? ?? ?????? ??????? ??????? ?