Related Clues:

• Protester's tool, maybe
• High school prank component, maybe
• Object used in some pranks
• Prankster's detonation
• Device letting off unpleasant smell when opened - reeking explosive
• Smelly device let off by a schoolboy
• Foul-smelling object used by practical jokers
• Device containing sulphurous matter traditionally loved by naughty boys
• Prankster's smelly explosive
• Smelly prank
• It smells awful when it goes off
• What makes a hum as it explodes?
• Malodorous pellet
• A right fuss, mine having been let off in class!
• Furore over theatrical flop leaves one with a nasty smell