[6][7] Her family was displaced twice, and she was almost taken out of school at the age of 15 because of the Lebanese Civil War; Chamoun recounted in a 2021 interview that she dissuaded her father from leaving her without an education.

Her talent was spotted by producer Waleed al-Husseini during the premiere of Khodor Alaa Eddin's play Akh ya Baladna in the Picaddilly Theater in the Hamra district of Beirut.

[9] She was cast in the role of the wife of Palestinian caricaturist Nagi al-Ali in the eponymous 1991 movie, with legendary Egyptian actor Nour El-Sherif.

[13][15] Following her performance in Men Barsoumi, for which she garnered accolades, the actress continued to make regular appearances in popular films and series.

[16] Her planned theatrical collaboration with renowned director Chakib Khoury dubbed al-Malja2 (The Shelter) was interrupted by the 2006 Lebanon-Israel conflict.

[9] Chamoun is known to have refused to cancel a showing of Shakib Khoury's play Mawani' al-hanin (Harbors of Nostalgia) after she was informed of her mother's death from complications of surgery in 1999.

[2] She supported the Lebanese protests against sectarian rule, endemic corruption and political class ineptitude,[19] she also said that revolution is long overdue.