During a visit to Paris, he was impressed by the discovery of 1959 exhibition of surrealist art from the Urvater collection.

Living in Paris and supported by the Thessa Herold's gallery, he painted fantastical scenes, full of disturbing and desirable creatures, reminiscent of Dali's work, according to a Mandiargues's review in 1970.

Inspired by Renaissance and Baroque painting, as well as his grandfather's exorcisms, Popović's works deal with the demons of a dark pessimism.

[2] He is the subject of the short documentary film L'amour monstre de tous les temps (1978) by Walerian Borowczyk.

In July 2016, whilst at his summer retreat on the Athos peninsula in Greece, he was taken ill and was transferred to a Belgrade hospital.