I don’t have a source for this, but a vintage magazine, surely. The hygienic kissing screen never caught on, for which we all are, I do not doubt, suitably grateful:

hygienic kissing screen

It does rather seem to prefigure the latex dental dam, which enjoyed (if I may use the word loosely) a certain currency among sex educators for a time. (How broadly it was actually adopted is a fact I don’t possess.)

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