foetid vs smelly

foetid and smelly both are adjectives.

Word	Noun	Adjective	Verb	Adverb
foetid	No	Yes	No	No
smelly	No	Yes	No	No

As adjectives, foetid and smelly are synonyms defined as:

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

foetid (adjective)	smelly (adjective)
offensively malodorous	offensively malodorous