Apply heat to DNA and it becomes useless. Try to set it on fire and suddenly you rediscover a use for it. Deoxyribonucleic acid is a great way to put out a flame. To understand why this is, we can look at its chemistry.
Here's something most of us would rather not consider: Would you rather use a flammable mattress in your child's crib, or use a flame-retardant one—which, in the process of stifling flames, can release enough toxic fumes to risk the lives of everyone else in the house?