Ch 1 L7: smell, the first step to learn

Exercise 7:

  1. I read on Internet that if you chewed a gum with a new flavor while studying a topic, then chewed the same flavored gum on the exam, you’d more easily remember the content. What do you think about it?
  2. Another idea to think: there are special chemicals in different types of toothpaste which tingle your tongue and gums. They don’t help with the cleaning at all, but they give you the feeling that your teeth are cleaned. [21]