What was Irrfan Khan hiding... his new look?

Irrfan Khan had been guarding his look in Karwan and even resorting to wearing surgical masks. Now that he has started shooting for Akarsh Khurana's film, leaked snapshots from the set tell a different story. Khan looks like he normally does. So, what exactly was the actor hiding? The film also stars Malayalam actor Dulquer Salman.