'Exhausted' Scarlett says baby Rose's smell makes her feel euphoric

Scarlett Johansson says motherhood is "exhausting in the most wonderful way".

The 30-year-old actress, who gave birth to her first child, Rose Dorothy, with husband Romain Dauriac in September, approximately one month before the couple secretly wed in Montana, admits she is still learning the ropes, but is smitten with their daughter.