Which famous scientist accidentally discovered penicillin but initially downplayed its importance, nearly missing one of medicine's greatest breakthroughs before it became a revolutionary pharmaceutical product?

The path from discovery to successful product isn't always straightforward! Some of history's most famous inventions faced skepticism, rejection, or were marketed in completely unexpected ways. This trivia question explores how a groundbreaking discovery was initially dismissed by its own inventor before becoming a household necessity. Test your knowledge about the fascinating intersection of accidental innovation and product development!

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Alexander Fleming, who left a petri dish uncovered and returned to find mold killing bacteria
Marie Curie, who noticed radiation effects while working with uranium compounds
Louis Pasteur, who observed bacteria didn't grow in boiled nutrient broth left exposed
Wilhelm Röntgen, who discovered unusual shadows on photographic plates near cathode ray tubes