unaired vs stuffy

unaired and stuffy both are adjectives.

Word	Noun	Adjective	Verb	Adverb
unaired	No	Yes	No	No
stuffy	No	Yes	No	No

As adjectives, unaired and stuffy are synonyms defined as:

Other synonyms of unaired include airless, close.

unaired (adjective)	stuffy (adjective)
lacking fresh air	excessively conventional and unimaginative and hence dull
	affected with a sensation of stoppage or obstruction
	lacking fresh air