Where does “odorlessness” come from?

odorlessness (English) comes from English odorless, from English odor, from Middle English odour, from Anglo-Norman odour, from Old French odor, from Latin odor, from Latin odōs, from Proto-Italic odōs — to smell, stink; to hate; to bite.

odorlessness (English): Absence of odor

Definitions

  1. Absence of odor

Ancestry of “odorlessness”, step by step

odorlessness traces back through two separate lines of ancestry.

via English odorless

StepLanguageWordMeaning
1EnglishodorlessHaving no odor
2EnglishodorAny smell, whether fragrant or offensive; A...
3Middle EnglishodourA smell or scent; a nasal sensation; A sensation...
4Anglo-Normanodour
5Old Frenchodorsmell
6LatinodorA smell, perfume, stench; Inkling, suggestion
7Latinodōs
8Proto-Italicodōs
9Proto-Indo-Europeanh₃édos
10Proto-Indo-Europeanh₃ed-to smell, stink; to hate; to bite

via English Ness

StepLanguageWordMeaning
1EnglishNessAn Ulster princess and the mother of Conchobar mac Nessa and Findchoem in the Ulster Cycle of Irish mythology. Daughter of Eochaid Sálbuide. Also the mother of Cormac Cond Longas by incest with Conchobar mac Nessa
2Middle Englishnesse
3Old Englishnæsnot, not at all; not; first/third-person singular...
4Proto-Germanicnasjąfoothill; headland; cape
5Proto-Indo-Europeannéh₂snose
Every word from Proto-Indo-European h₃ed-Every word from Proto-Indo-European h₃édosEvery word from Proto-Italic odōs