Where does “malcheiroso” come from?

malcheiroso (Portuguese) comes from Portuguese cheirar, from Old Portuguese cheirar, from Latin frāgrō, from Proto-Italic frāgrāō, from Proto-Indo-European bʰreh₂gro-, from Proto-Indo-European bʰreh₂g- — to smell.

malcheiroso (Portuguese): Of bad smell; stinky; smelly

Definitions

Of bad smell; stinky; smelly

Ancestry of “malcheiroso”, step by step

malcheiroso traces back through two separate lines of ancestry.

via Portuguese cheirar

Step	Language	Word	Meaning
1	Portuguese	cheirar	to smell; to smell of; to snort
2	Old Portuguese	cheirar	to smell
3	Latin	frāgrō	to emit a smell of, to smell of, to be redolent of, to reek of
4	Proto-Italic	frāgrāō	—
5	Proto-Indo-European	bʰreh₂gro-	—
6	Proto-Indo-European	bʰreh₂g-	to smell

via Portuguese mal

Step	Language	Word	Meaning
1	Portuguese	mal	badly; hardly; barely; wrong
2	Old Occitan	mal	bad
3	Latin	malus	unpleasant, distressing, painful, nasty, bad;...
4	Ancient Greek	μηλέα	apple tree
5	Ancient Greek	μῆλον	apple; any fruit from a tree; a woman's breast
6	Proto-Indo-European	(s)meh₁l-	small animal”; small animal

Every word from Proto-Indo-European bʰreh₂g- →Every word from Proto-Indo-European bʰreh₂gro- →Every word from Proto-Italic frāgrāō →