Disclosed herein is an apparatus for preventing fogging in a head worn apparatus, in accordance with some embodiments. Further, the head worn apparatus covers a portion of a head of a user. Further, the apparatus comprises an elongated body, an attachment mechanism, and a fan assembly. Further, the elongated body extends from a first end of a first portion to a second end of a second portion. Further, the elongated body is curved around an axis perpendicular to the elongated body making the first portion substantially perpendicular to the second portion. Further, the elongated body tapers from the first end towards the second end. Further, the attachment mechanism is configured to be coupled with a portion of the head worn apparatus. Further, the at least one fan assembly is configured for circulating airflow in the head worn apparatus.