Which of the following is NOT a hazard associated with flammable liquids?

Corrosive substances are not inherently a hazard associated with flammable liquids. While flammable liquids can pose several dangers, including the ability to ignite easily due to low flash points, the presence of combustible materials around these liquids, and their high vapor pressure leading to the quick formation of flammable vapors, they do not typically correlate with the characteristics of corrosive substances. Corrosive substances are defined by their ability to cause destruction to living tissue or severe corrosion to materials, which is a different type of hazard not relevant specifically to flammable liquids. Thus, selecting corrosive substances as the answer reflects an understanding that it does not directly relate to the combustion or fire risks typically associated with flammable liquids.