As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE CLIMBING OUT OF EWR, THE FLIGHT ATTENDANT SMELLED FUMES AND SMOKE IN THE CABIN AND LAV. CREW RETURNED TO EWR AND MX RAN BOTH ENGINES AND FOUND TO BE GLYCOL IN THE BLEED SYSTEM. MX R&R THE LAV SMOKE DETECTOR IAW EMB 145XR MM 26-14-01 AND MM 30-21-00. ACFT WAS RELEASED TO SERVICE.