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What is your first name? What is your state or province, and country? APPLE GOT IT RIGHT! GUESSED WRONG! LEMON RIND GOT IT RIGHT! GUESSED WRONG! POTATO GOT IT RIGHT! GUESSED WRONG! ONION GOT IT RIGHT! GUESSED WRONG! What foods were easier to identify? What role does smell play in identifying foods? Do you have suggestions for other experiments we could feature? Write your suggestions here.  Click here to send your form.     Check experiment results Illustration by Tony Anthony © 1997 National Geographic Society. All rights reserved.