A. helps B. while C. message D. closelyPhrases:A. you watched 1eating itB. send nerve 2to your brainC. our noses and our brain are very 3connectedD. 4us remember things For years, scientists have been studying the special power of smells. It seems that 5.When you smell something, the odor goes up your nose to the smelling zones. From here, sense cells 6telling it what you smelled. More than our other four senses, our sense of smell changes our mood and 7. If you were told to think about popcorn, you'd probably recall its smell. And then you might remember the movie 8Our sense of smell also makes us aware of danger—like the smell of smoke.