Theatrical Smoke
Puzzle 14 of Alternatives to Plastic Pack
Question is: Theatrical Smoke
and the answer is: DRYICE
Word Meaning:
DRY ICE — Carbon dioxide frozen in the solid state, which sublimes at −78.5 °C (−109.3 °F) at normal atmospheric pressure, used especially as a cooling agent and for the production of foglike special effects.
Definition source: Wiktionary (CC BY-SA 4.0)