Related Clues:
- Mount St. Helens fallout
- Campfire refuse
- BBQ leftovers?
- Phoenix surroundings?
- Clambake leftovers
- Hearth stuff
- Expelled matter, as lava
- Vapers don't create them
- Phoenix starters
- Fireplace leftovers
- Burning wood leaves them behind
- Proof of fires
- Smokers flick them
- E-cigarette's lack
- Butane and methane, for two