Is it normal to share an electric toothbrush?
Depends.It depends
Sharing the electric toothbrush handle is fine if each person uses their own brush head. Sharing the same brush head is best avoided because it can spread saliva and germs.
If you mean sharing the handle but swapping on your own brush heads, that’s a pretty ordinary setup. Just keep the heads separate and let them dry between uses.
Using the same brush head is a different story: it passes saliva back and forth, so most people would consider that unhygienic. If you’ve already done it once, no need to panic—just switch to your own head going forward.