Scarecrow's fear gas

Scarecrow fear gas is a hallucinogenic toxin, which makes the victim believe they're seeing real monsters.

Physical appearance
It's a green gas emitted from a spray can.

Scooby-Doo! Team-Up
Insert details here.

Appearances

 * Scooby-Doo! Team-Up
 * #2. Who's Scared? (no lines)