- G-d blows the soul in through the nostrils, not his mouth:
וַיִּיצֶר ה"א אֶת־הָאָדָם עָפָר מִן־הָאֲדָמָה וַיִּפַּח בְּאַפָּיו נִשְׁמַת חַיִּים וַיְהִי הָאָדָם לְנֶפֶשׁ חַיָּה׃
the LORD God ... blew into his nostrils the breath of life, and man became a living being.
- G-d sucks the soul out through the [kiss on the] mouth: The verses about the way of death of Moses, Aharon and Miriam (here)
"וַיָּמָת שָׁם מֹשֶׁה עֶבֶד־ה' בְּאֶרֶץ מוֹאָב עַל־פִּי ה' " - literally "by the mouth [on mouth] of G-d"
According to the sources here, it hints that their souls were "sucked out" through the kiss on the mouth.
This looks contradicting to me - this could be the other way around either. Any explanations?