Where does “smarkul” come from?

smarkul (Polish) comes from Polish smarkać, from Proto-Slavic smъrkati — to blow (one's nose)?.

Ancestry of “smarkul”, step by step

StepLanguageWordMeaning
1Polishsmarkaćto blow one's nose
2Proto-Slavicsmъrkatito blow (one's nose)?
Every word from Proto-Slavic smъrkati →Every word from Polish smarkać →
smarkul — Etymology, Origin & Word History | Etymology Explorer