Stench

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Old English stenc ‘smell’, of Germanic origin; related to Dutch stank, German Gestank, also to the verb stink.

wiktionary

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From Middle English stench, from Old English stenċ(“stench, odor, fragrance”), from Proto-Germanic *stankwiz(“smell, fragrance, odor”), from Proto-Indo-European *stengʷ-(“to push, thrust”). Cognate with Dutch stank(“stench, odor”), German Stank, Gestank(“stench, odor, smell”), Danish stank(“stench”), Swedish stank(“stench”), Icelandic stækja(“stench”).

etymonline

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stench (n.)

Old English stenc "a smell, odor, scent, fragrance" (either pleasant or unpleasant), from Proto-Germanic *stankwiz (source also of Old Saxon stanc, Old High German stanch, German stank). Related to stincan "emit a smell" (see stink (v.)) as drench is to drink. It tended toward "bad smell" in Old English (as a verb, only with this sense), and the notion of "evil smell" has predominated since c. 1200.