In the early 1900s, Imogene Rechtin started a crusade to get people to stop kissing socially as a way to stop disease spread. Her argument was sound, but she was largely dismissed as being uptight.
Research:

SYMHC Classics: Nelson Pill Hearings
38:25

Behind the Scenes Minis: Alaska and Contraceptives
28:17

The IUD: A History
44:41