Should children share earrings

No not unless they have cleaned them and have parental permission.
i personally don't think kids should get earrings but don't take that the wrong way.
sharing earrings can cause serious infection and your kid may need an operation
hope my answer helped
good luck
P.S how old should a kid be to get earrings cause Isla-Scarlett-Grace my kid wants earrings and she is only 6