?? ????? ??? ????? ?? ????? ???????? ??? ?????????? ???? ? ????? ??? ??? ????????????? ? ?????? ????? ??? ??????.?? ????????? ????????? ???????? ???????? ???? ??? ?????.NH3fumes have a pointy and pungent odor that can irritate the nose, eyes, pores and skin and mucous membrane, and might hurt the respiratory tract. Having said that, superior concen