Where does “suu-nenäsuojus” come from?

suu-nenäsuojus (Finnish) comes from Finnish suojus, from Finnish suoja, from Proto-Finnic sooja, from Russian со́я, from Dutch soja, from Japanese そい, from Japanese 醤油, from Middle Chinese 醬油 — bean paste.

Ancestry of “suu-nenäsuojus”, step by step

suu-nenäsuojus traces back through 3 separate lines of ancestry.

via Finnish suojus

StepLanguageWordMeaning
1Finnishsuojusguard, protection, cover, veil; pad; sheath
2Finnishsuojashelter; protective covering; refuge
3Proto-Finnicsoojashelter; protection; warm
4Russianсо́яjay {{i|dialectal}}
5Dutchsojasoy
6Japaneseそい醤油 soy sauce
7Japanese醤油soy sauce
8Middle Chinese醬油
9Middle Chinesebean paste

via Finnish suu

StepLanguageWordMeaning
1Finnishsuumouth
2Proto-Finnicsüüthread, fibre; annual ring; reason, cause
3Proto-Uralicśuwemouth

via Finnish nenä

StepLanguageWordMeaning
1Finnishnenänose; rhinarium, nose leather
2Proto-Finnicnenänose
Every word from Middle Chinese Every word from Middle Chinese 醬油Every word from Japanese 醤油