The Welsh actress has been travelling tirelessly to promote the movie, and all of her efforts have taken a toll on her throat.
She says, "DYLAN THOMAS called (Wales) the nation of voices - this is why I have no voice.
"(I've had) one of the busiest weeks for the last few months and I just woke up and it went.
"I was travelling to Europe and promoting Zorro and then I started talking, talking, talking for days. Then I woke up the other day - nothing. It was terrifying."
But now that her voice is beginning to return, Zeta-Jones is enjoying the smoky quality it has taken on.