Step 1 : Introduction to the question "8. Which of these words, when used as a quantity word, always suggests 'smell'?"
...1. gust 2. cloud 3. puff 4. whiff A cloud of perfume suggests smell too, but cloud in itself does not.It could be combined with dust, smoke, even with grasshoppers or flying ants. A 'whiff of' will normally be combined with words suggesting smell: garlic; perfume. Gust and puff usually imply wind.