The contact owns a 2017 Nissan Murano. The contact stated she and her son were getting sick due to " silent fumes" entering the vents of the vehicle. The contact stated no warning light was illuminated. The contact sought medication attention for headaches, high blood pressure, and dizziness. The contact took the vehicle to the local dealer, where a failure was not determined. The dealer replaced the air cabin filter and the engine filter but she continued to experience the same symptoms. The manufacturer had not been informed of the failure. The failure mileage was approximately 103,000.