Lunar Dust: “The dust is very fine, abrasive and sharp, like tiny pieces of glass, making it more of a dangerous threat than just a simple nuisance.”

"Future astronauts spending long periods of time on the Moon could suffer bronchitis and other health problems by inhaling tiny particles of dust from its surface, according to new research."
https://news.stonybrook.edu/homespotlight/breathing-lunar-dust-could-pose-health-risk-to-future-astronauts/

"“We learned from Apollo that lunar dust can be less than 20 microns (about 0.00078 inches) in size,” said Sharon Miller, the passive dust shedding material program’s principal investigator at NASA Glenn. “The dust is very fine, abrasive and sharp, like tiny pieces of glass, making it more of a dangerous threat than just a simple nuisance.”

Fifty years later, the challenges of dust are greater for long-term exploration and sustainability on the Moon, as well as future human exploration of Mars."
https://www.nasa.gov/feature/glenn/2021/dust-an-out-of-this-world-problem

"Among those challenges are the potential problems caused by long-term exposure to lunar dust. Astronauts on the Apollo missions had to deal with the dust, but since the missions were only days long, the problems were limited. When astronauts live on the moon for months at a time, NASA will need to better understand the dangers the dust presents in order to prevent problems.

Some of the challenges presented by lunar dust were almost immediately obvious. Because it was formed by micrometeorite impacts on the rocky surface, lunar dust is essentially powdered glass. Its abrasiveness can damage equipment and potentially astronauts' health. Given that the abrasiveness of the dust also makes it cling to surfaces, there is particular concern that long-term inhalation of lunar dust could cause lung problems.

Other potential dangers of lunar dust are still relatively unknown."
https://www.nasa.gov/audience/foreducators/postsecondary/features/sick-of-the-moon.html

"A team led by researchers at the University of Colorado Boulder has come up with a new way to deal with lunar dust, and it involves using electron beams for cleaning fine particles off surfaces. It sounds sci-fi, but it has a lot of potential for helping NASA astronauts prevent dust disasters on the moon."
https://www.cnet.com/science/scientists-develop-moon-dustbuster-to-clean-lunar-gunk-off-astronaut-gear/

Moon Dust Is Super Toxic to Human Cells
https://www.livescience.com/62590-moon-dust-bad-lungs-brain.html

The Apollo Astronaut who Became Sick from Inhaling Moondust
https://www.thevintagenews.com/2018/11/04/allergic-to-the-moon/?andro=1&firefox=1

Breathing Lunar Dust Could Give Astronauts Bronchitis and Even Lung Cancer
https://www.universetoday.com/139182/breathing-lunar-dust-could-give-astronauts-bronchitis-and-even-lung-cancer/