The Aromatic Alchemy of Petrichor

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Across
  1. 2. To produce and discharge a substance.
  2. 4. Relating to the senses.
  3. 7. To catch and hold.
  4. 8. Relating to the sense of smell.
  5. 10. Easily evaporated.
  6. 14. The origin and history of a word.
  7. 18. To gather or collect.
  8. 19. A pleasant smell.
  9. 20. A substance formed when two or more elements are chemically bonded.
Down
  1. 1. The smell after rainfall.
  2. 3. The length of time something lasts.
  3. 5. The quality of being attractive or interesting.
  4. 6. To break open suddenly.
  5. 9. A triatomic form of oxygen.
  6. 11. A suspension of fine solid particles or liquid droplets in a gas.
  7. 12. To allow something to escape or be freed.
  8. 13. Having a strong effect or influence.
  9. 15. A potent earthy-smelling compound.
  10. 16. Relating to carbon-containing compounds.
  11. 17. Single-celled microorganisms.