Which advertising slogan, created in 1919, transformed the perception of a failing invention and essentially created the modern deodorant industry by addressing a previously unmentioned 'social fear'?

In the world of inventions and discoveries, sometimes the most powerful innovation isn't the product itself, but how it's marketed to the public. This poll explores a famous advertising slogan that transformed a struggling invention into a household necessity, creating an entirely new consumer market in the process. Test your knowledge of how clever marketing helped turn an inventor's creation into a commercial success!

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

"Halitosis – They talk about you behind your back" (Listerine)
"Reach out and touch someone" (AT&T)
"Within a week you'll have your friends talking about you" (Odorono)
"Does she or doesn't she? Only her hairdresser knows for sure" (Clairol)