Athena was virginal yet a warrioress. Admantine and sometimes ruthless. My choice for her would be something cool and yet which projects strength. Cristalle or Diorella come to mind here, especially Cristalle.
Aphrodite was not virginal, of course, and she could be wily and deceptive. Unlike Athena, she was cowed in the face of battle. But, like Athena, she could be tough in her own way. For her I'd choose L'Heure Bleue or Bal a Versailles.
Hermes was a prankster of the highest order and lover of hijinks. As messenger of the gods, he'd wear something versatile and subtle, such as Chanel Eau de Cologne or a good cologne from Guerlain.
Apollo was not just the god of poetry but also of healing and disease. Pythian Apollo and Sminthian Apollo, all in one. He'd either wear something ethereally poetic or something skinky skank. Each is possible. Guerlain Apres l'Ondee or Serge's Muscs Koublaï Khän.
Fun question N_Tesla. Which fragrances would you choose?