Shahab Hosseini worked as a radio host in early to mid 90s before his very first TV appearance as host in the sitcom “Oxygen” (1998), which was the starting point in his acting career. The show had 30 episodes and was about a man building a ventilation room to help people get away from the city’s polluted air, and soon the room gets full of people with different stories to tell. Hosseini was in his early 20s at the time.