Which famous invention's initial product launch was marketed as a solution for medical issues, but later became popular for entirely different reasons?

The history of innovation is filled with fascinating product launches that changed industries forever. Some of these launches were meticulously planned marketing masterpieces, while others became legendary through unexpected twists. Test your knowledge about some of the most impactful product introductions that shaped our modern world and the surprising strategies behind them.

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Coca-Cola (originally marketed as a medicinal syrup for headaches and morphine addiction)
Post-it Notes (initially marketed as surgical adhesive for closing wounds)
WD-40 (first sold as an arthritis pain relief spray before becoming a lubricant)
Listerine (launched as a floor cleaner before becoming a mouthwash)