??? ??????????? ??? ??? ???????????. ?????? ???? ???????? ??? ??? ????????. ????????? ??? ?????? ???????? ??? ????? ??????????...???? ??????????? ????? ??? ????????? ?? ???? ??? ?? ?????????? ??? ?? ?? ???????????? ??? ?? ??????? ????. ?????????????? ??? ?? ?????? ?????...NH3fumes have a pointy and pungent odor which can irritate the nose, eyes, po