smelliest
smell-i-est
adjective
Having the strongest and most unpleasant odour among a group of things or people.
"The gym socks were the smelliest item."
Thesaurus
Synonyms: foul, noisome, malodorous, ill-smelling, stinky, fetid, foetid, unpleasant-smelling, foul-smelling, stinking, funky, smelly