>>For one thing, it was as dry as it’s possible to be, and bombardment by solar and cosmic radiation had left the particles with a static electric charge. This made the dust stick to the astronauts’ spacesuits as a grayish, black powder that was almost impossible to shift and ended up contaminating both the interior of the Lunar Module and the orbiting Command Module when they returned, making them smell like burned gunpowder.
Worse, the dryness and radiation made the dust chemically active and the particles were so abrasive that they took their toll on the spacesuits, sample containers, and other equipment.
Silicate dust is already a hazard on Earth, especially for miners or people exposed to dust storms or volcanic eruptions, which can cause a condition called silicosis. But lunar dust is different. The highly active environment of Earth wears down silicate particles, so they become rounded, but moon dust has sharp, jagged edges that make it so abrasive that it wore away at the special outer boots worn by the moon walkers. What this would do to lung tissue can only be imagined at this point.<<