SAN FRANCISCO INTERNATIONAL AIRPORT (KRON) — A South West flight to Chicago is delayed this morning after suspicious baggage.  The incident involved Southwest Flight 2436, which was scheduled

to depart at 6 a.m. from SFO to Chicago Midway International Airport, SFO duty manager Cathy Morrison said.

The alarm was caused by a strange smell on the flight, according to SFO officials.

Crews smelled an unusual odor coming from a bag and asked firefighters to inspect it. Nothing suspicious was found and crews continued loading the luggage onto the plane until they smelled a second bag with the same odor, Morrison said.

Hazmat crews were unable to locate the cause of the smell so the flight took off at 7:03 a.m.