Yeah I bet Hasan wears like Tom Ford Tobacco Vanilla or Bois Pacifique, or maybe the Hermès Terre d'Hermès Eau Intense Vétiver EDP.
Mehdi probably wears a classic Burberry or something from Jo Malone.
And Prem probably goes for the simpler but lovely Maison Margiela 'Replica' Lazy Sunday Morning.
But more than anything I bet they smell like intelligence, decency and humanity.... and that's incredibly sexy.