Scarlett Johansson has revealed the one thing about herself that she would like to keep hidden from her children. The Black Widow star, 37, who shares daughter Rose, seven, with ex-husband Romain Dauriac, and son Cosmo, seven months, with husband Colin Jost, was asked the question during an appearance on The Drew Barrymore Show. After jokingly deflecting the question initially, Johansson revealed that she hopes her children never find out that she used to smoke because she is “so ashamed”.