Can there be a planet with no dust?
What restrictions this planet must have to make it possible?
Planet can have any size, be made of any material
A human must be able to land in it and observe it, dust added to the planet from the human's clothes or equipment may compromise the no-dust characteristic of the planet but it must be dust-less before then.
Edit: Dust in the definition of fine, dry powder consisting of tiny particles of earth or waste matter lying on the ground or on surfaces or carried in the air.
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So start with a planet that is mostly made of a metal with a low melting point, say lead. It's set close enough to a star that during the day the surface becomes liquid, but it also has a low rotation speed so during the night it's cold enough that sufficient heat leaks out and it becomes a solid again. Any space dust or meteors that impact during the night get integrated into the surface when it melts, and are trapped when it solidifies again.
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