Related Clues:
- Gas in a stratospheric layer
- Lethal phosphorus compound
- Bluish 45-Down
- Atmosphere protector
- ___ layer
- Layer with a 'hole' in it
- Give some bottles a rinse — there's poison there
- Gas, about 28 gm?
- Imperiled atmospheric layer
- Bracing air of old, now seen as potentially toxic
- Ultraviolet index factor
- Australia has singular, bracing air
- Some atmosphere at wizard's postcode?
- Condensed oxygen
- Ace Frehley song about a layer?