As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING BOARDING, A PASSENGER IN SEAT 1F NOTICED AN UNUSUAL ODOR. THE PASSENGER BROUGHT THIS TO THE CREW`S ATTENTION. THE CREW DECIDED TO DE-PLANE THE PASSENGERS VIA THE MAIN CABIN DOOR. SUBSEQUENT INVESTIGATION FOUND THE SIDEWALL LIGHT ASSEMBLY IN THE VICINITY OF SEAT 1F EXHIBITING SIGNS OF HEAT DAMAGE. THE LIGHT ASSEMBLY WILL BE REPLACED. (TC NR 20180103004).