Where does “*flag(u)rum” come from?

*flag(u)rum (Vulgar Latin) comes from Latin flāgrō, from Latin frāgrō, from Proto-Italic frāgrāō, from Proto-Indo-European bʰreh₂gro-, from Proto-Indo-European bʰreh₂g- — to smell.

Ancestry of “*flag(u)rum”, step by step

StepLanguageWordMeaning
1Latinflāgrōto burn, blaze
2Latinfrāgrōto emit a smell of, to smell of, to be redolent of, to reek of
3Proto-Italicfrāgrāō—
4Proto-Indo-Europeanbʰreh₂gro-—
5Proto-Indo-Europeanbʰreh₂g-to smell
Every word from Proto-Indo-European bʰreh₂g- →Every word from Proto-Indo-European bʰreh₂gro- →Every word from Proto-Italic frāgrāō →