Publicist Henri Bollinger says Adams died in Los Angeles Wednesday from cancer and pneumonia.
Adams was a graduate of the Juilliard School of Music and hoped to become an opera singer. Instead, she gained fame for her sketches with Kovacs and her pivotal roles in Broadway musicals. She also had a long stage and film career.
Adams was born Elizabeth Edith Enke in 1927 in Kingston, Pa., and grew up in Tenafly, N.J.
She first attracted notice on the TV show "Arthur Godfrey's Talent Scouts." Kovacs was then performing his innovative comedy show on a Philadelphia TV station, and his director saw her and invited her to audition.
Adams also was known as the sexy spokeswoman for Muriel cigars in the 1950s and 1960s. In TV ads, she famously purred: "Why don't you pick one up and smoke it sometime?"
Adams is survived by a son, Joshua Mills.