What word does this rebus represent?

meta meta
meta meta

There was a minor accident with a doctor's son but the doctor noticed no major injury. After the treatment, the father of that doctors son is sitting with the son of the doctor without the doctor being in the room.

How can this be possible?

I taste better than I can smell. Who am I?

How could a baby fall out of a twenty-story building onto the ground and live?

I have an eye but still cannot see.

Who am I?

What is the largest number you can write with just 3 digits?

Living above a star, I do not burn
Eleven friends and they do not turn
I can just be visited in a sequence, not once or repeatedly
PQRS are my initials
Can you tell my name accurately?

What can you hold in your right hand, but never in your left hand?

It's a protector.
It sits on a bridge.
One individual can see directly through it, while others wonder what it hides.

What is it?

What is the Surname of Barbie Doll?