Resin dust is inert. It's an irritant at worst.. It is no more or less harmful than any fine dust.
Resin kits, accessories and figures have been around for at least 25 years. Check a box for CYA warnings. Small parts, choking hazard, not for children, but nothing about health.
Consider everything else around you... Captain Obvious puts warnings everywhere: Don't use a hair dryer in the shower, food coming out of a microwave may be hot (it better be!) a jar of peanuts contains...wait for it...peanuts.
Very large amounts, industrial amounts, of resin dust can be very combustible. The amounts we create don't ever come close to that. If you snort the dust off your workbench, that's probably not a good thing. But other than that, at most you might want a simple dust mask.
Back in the 80's,. some modelers decided that super glue was deadly because cyanocrylic sounded like it might be related to cyanide.
Which brings us back to the original question. I use Zap-A-Gap green for most resin items or for very large or heavy parts, 5 minute epoxy. larger parts might do better if pinned. For small parts, it's probably a good idea to wash them to remove mold release. I'd do this before cutting them grom the pour plugs, however.