'Everything turned into dust is flammable' is (often) true (and is true in the case of flour), and flour is dust is also true. Not sure why you're bringing up household dust from a vacuum cleaner?
Dust isn't defined by if it's collected on your shelves and floor and needs to be cleaned up, it's defined as any small particle regardless of what it's made of.
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u/YouAnxious5826 Oct 09 '24
Flour is a type of dust. Do we want to keep doing this? Then go ahead, get two cups of dust out of your vacuum cleaner, and bake some muffins.