Is it possible to have second hand smoke and still look young?

It depends: Looking young is a subjective concept and depends on multiple factors, genetics, sun damage, chronic illnesses, sleep deprivation and of course as you mention, cigarette smoke exposure, ect. It's unlikely that there are any studies to quantitate how faster you age with tobacco exposure but what you can do now is trying to live healthy and avoid exposure to tobacco smoke as much as you can. Cheers.