Regarding the flammability, a couple of things come to mind. We are not instruction/label readers and/or not good at playing with fire. I'm not a good instruction reader but excellent at playing with fire.

You will see a flame in the attached picture. The flame was lit on the wood with a match and a small pool of cleaner. You will see that I am spraying the flame with the cleaner and the flame plays with me.

The second picture further demonstrates my point about brake cleaner.

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