I work on a film set at the moment and the lead actor smokes on the stage. ?

It is illegal to smoke at a workplace, why should famous actors be an
exception in the law? I cant stand it and don't want to lose job by
complaining what should I do. Regards, a worker at pinewood studios UK
dark shadows Jhonny dept
He smokes when he is not acting right next to me, it's Jhonny dept
How can I get him to stop with no one finding out