Where does “unsavory” come from?

I need to work through this etymology chain carefully. Looking at the chain provided: - English savory | Latin unus | Proto-Indo-European óynos | Proto-Indo-European óynos | Proto-Indo-European ano- | Proto-Indo-European ano- | Latin -or | Latin -or This chain appears problematic—it doesn't clearly connect to form "unsavory." The chain seems to show "unus" (Latin for "one") and various forms, but "savory" should derive from "savor" (taste/flavor), not from "one." However, following the instruction to "state only what the chain supports" and not invent steps, I cannot construct an accurate etymology sentence from this chain because it doesn't actually support a coherent path to "unsavory." If I must attempt a sentence based strictly on what's given (even though it appears malformed), I cannot do so

unsavory (English): Not savory; without flavor; Of bad taste;...

Definitions

  1. Not savory; without flavor; Of bad taste;...

Ancestry of “unsavory”, step by step

StepLanguageWordMeaning
1EnglishsavoryTasty, attractive to the palate; Salty and/or...
2Middle Englishsavory
3Middle Englishsavourie
4Old Frenchsavouré
5Old Frenchsavourerto give taste
6Late Latinsaporare
7Latinsapōrōto flavour, make tasty
8LatinsaporA taste, flavor, savor; A sense of taste; A...
9Latin-orused to form a third-declension masculine...
10Proto-Italic-ōsCreates masculine action nouns or result nouns...
11Proto-Indo-European-ōsCreates masculine and feminine action nouns or...
12Proto-Indo-European-oss
13Proto-Indo-European-osCreates action nouns or result nouns from verbs;...

Words derived from “unsavory

Every word from Proto-Indo-European -osEvery word from Latin -orEvery word from Latin sapor