UPDATE: I am mainly interested in learning about vintage chips, ics, cpus etc, mainly non-soldered chips. It would also be interesting to know about any other component (i.e., capacitor) that could have been near a soldered chip that could cause an issue (might still be broad, since computers run everything/the chips could have been used elsewhere besides in computers).
Taking from my previous question here Are there dangers to humans from PCB/Circuit Corrosion?
I am curious if there are special precautions one should take when dealing with old/vintage electronics?
From my understanding current electronics are all made with lead-free solder, while older equipment (and even current hobbyist equip) will contain lead solder, which I'm not sure if that is a worry, but some comments were suggestion that there could be "lead-dust...." in some situations, and not sure if handling will cause issues (maybe the solder is breaking down over time, not sure if it does that?).
There is also the worry of corrosion and other nasties that could be on the circuits.
So my question is, when dealing with vintage/old electronics that might or might not be contaminated with nasties, are there specific handling instructions we should take note of? obviously when dealing with corrosion and other build up of nasties we should be wearing protection, but what about dealing with boards/circuits that are in pristine new-line condition?
EDIT: Thanks for the answers so far, and even though there isn't a lot of handling instructions, I appreciate being told what nasty chemicals I should look out for, and what.
I have edited the question a bit to try to be "less broad."