ill-scented vs smelly

ill-scented and smelly both are adjectives.

Word	Noun	Adjective	Verb	Adverb
ill-scented	No	Yes	No	No
smelly	No	Yes	No	No

As adjectives, ill-scented and smelly are synonyms defined as:

Other synonyms of ill-scented include fetid, foetid, foul-smelling, foul, funky, noisome, stinking.

ill-scented (adjective)	smelly (adjective)
offensively malodorous	offensively malodorous