Where does “odourproof” come from?

odourproof (English) comes from English proof, from Middle English proof, from Old French prove, from Latin proba, from Latin probāre, from Latin probō, from Latin Probus, from Proto-Indo-European pro-bhwo- — passed , crossed.

Ancestry of “odourproof”, step by step

odourproof traces back through two separate lines of ancestry.

via English proof

StepLanguageWordMeaning
1EnglishproofAn effort, process, or operation designed to...
2Middle Englishproof
3Old Frenchprove
4Latinprobatest, trial; proof, evidence
5Latinprobāre
6Latinprobōto approve, permit, commend
7LatinProbusgood, serviceable, excellent, superior, able
8Proto-Indo-Europeanpro-bhwo-being in front, prominent
9Proto-Indo-Europeanpro-toward, forward
10Proto-Indo-Europeanpor-to give birth; forward, through; going, passage
11Proto-Indo-Europeanper-before, in front; first; to go through
12Proto-Indo-Europeanpr̥tóspassed , crossed

via English odour

StepLanguageWordMeaning
1EnglishodourAlternative form of odor
2Middle EnglishodourA smell or scent; a nasal sensation; A sensation...
3Anglo-Normanodour
4Old Frenchodorsmell
5LatinodorA smell, perfume, stench; Inkling, suggestion
6Latinodōs
7Proto-Italicodōs
8Proto-Indo-Europeanh₃édos
9Proto-Indo-Europeanh₃ed-to smell, stink; to hate; to bite
Every word from Proto-Indo-European pr̥tósEvery word from Proto-Indo-European per-Every word from Proto-Indo-European por-