Where does “смрадить” come from?

смрадить (Russian) comes from Russian смрад, from Old Church Slavonic смрадъ, from Proto-Slavic smȏrdъ, from Proto-Balto-Slavic smorʔdos, from Proto-Indo-European smord-o-s.

Ancestry of “смрадить”, step by step

StepLanguageWordMeaning
1Russianсмрадstench, stink
2Old Church Slavonicсмрадъstench
3Proto-Slavicsmȏrdъstench
4Proto-Balto-Slavicsmorʔdos—
5Proto-Indo-Europeansmord-o-s—
Every word from Proto-Indo-European smord-o-s →Every word from Proto-Balto-Slavic smorʔdos →Every word from Proto-Slavic smȏrdъ →