Possible Clues:

• Stuff that won't be consumed, like cream on the turn so
• A call for help about worst insulating material
• Arsenic, of the highest quality, and osmium could be the cause
• Like top sailor's material
• This way there are no better letters never 5 down
• Siding hazard
• Insulating material like cream on ospreys' wings
• Breaking orders for delinquents remains not right - you can't inflame this
• Carcinogenic fireproofing
• Fire extinguisher?