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When a hygienically-challenged valet returns Jerry's car to him, the man's smell begins to plague the vehicle and anyone who enters it. Jerry, Elaine and Kramer each find themselves unable to rid themselves or the car of the vile odor. Meanwhile, George discovers that since their breakup, Susan has decided to indulge her lesbian tendencies. Unfortunately for Susan, her girlfriend is swayed to heterosexuality when she finds Kramer irresistible. Nick Bakay, Kari Coleman, and Taylor Negron guest star. Originally airing March 25, 1993, "The Smelly Car" was the 22nd episode shot for the show's fourth season, despite being the 21st one shown.