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:

Gustave Flaubert and the ‘Madame Bovary’ Trial
45:15

Elizabeth Bisland, Beyond the Trip Around the World
42:54

SYMHC Classics: Marie Laurencin
32:46