In 1910, the National Pharmaceutical Society gave a thumbs up to the Osculatory Screen, a piece of silk in an elegant handle meant to prevent the spread of germs. The device was described as a "disinfected silk gauze through which the kiss is accomplished, the gauze being held in an ivory frame and placed between the two pairs of lips before they meet."
Besides just not working, I think the Osculatory Screen would take quite a bit of the romance of accomplishing a kiss.
Kissing Screen (Weird Universe)
