anon posted last week
Aluminum Nano Particles in Aerosols Protect Harmful MicroOrganisms From Healing UV
In the following diagram taken from the scientific paper linked below, even a reader with no background in biochemistry / microbiology can clearing see that when nano particles of aluminum attach to bacteria they actually protect the bacterium from the healing (killing) effects of UV radiation delivered in sunlight.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5567371/figure/Fig1/
Full:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5567371/