Where does “fragro” come from?

fragro (Latin) comes from Proto-Italic frāgrāō, from Proto-Indo-European bʰreh₂gro-, from Proto-Indo-European bʰreh₂g- — to smell.

Ancestry of “fragro”, step by step

Step	Language	Word	Meaning
1	Proto-Italic	frāgrāō	—
2	Proto-Indo-European	bʰreh₂gro-	—
3	Proto-Indo-European	bʰreh₂g-	to smell

fragro — Etymology, Origin & Word History | Etymology Explorer