Blaise was killed at the age of 23 in a car accident. Following a party, he was driving a car, a Renault 17 Gordini which he had purchased with funds from his acting work. Accompanied by two friends whom he had brought along for company, Blaise lost control and crashed against a plane tree on the route de Laujol between Moissac and Durfort-Lacapelette, where he lived with his parents. His friends were also killed.