Observing this problem of Hanuman, Vayudev obtained offended. He stopped his speed at that moment. Due to this, no creature on the earth could breathe, and all started to experience in agony. Hanuman beej Mantra is believed to dispel ghosts and spirits and thrust back maladies like fever and epilepsy. https://andrewnwhp.blogdal.com/35394859/everything-about-hanuman-mantra