What was found
RIC FLT 1924 - EN ROUTE FROM CLT TO BWI, DURING CRUISE, THE AIRCRAFT DEVELOPED A SMELL IN THE CABIN. CABIN CREW MEMBERS AND A FEW PASSENGERS EXPERIENCED NAUSEA AND BECAME LIGHTHEADED. PARAMEDICS WERE CALLED OUT TO TREAT PASSENGERS AND CABIN CREW. CREW DECLARED AN EMERGENCY AND DIVERTED TO RIC WHERE THE FLIGHT LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE INSPECTED CABIN AND CARGO BINS. NO SMELL NOTED. BOTH PACKS CHECK NORMAL. NO DEFECTS NOTED. AIRCRAFT OK FOR SERVICE.