As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) ON DEPARTURE CREW DETECTED A STRONG ODOR IN THE COCKPIT, BOTH PILOTS FELT NAUSEOUS & ELECTED TO DIVERT BACK. THE CREW FOLLOWED THE OVERWEIGHT LANDING CHECKS & LANDED ON 08R WITHOUT FURTHER INCIDENT. EMER TRUCKS WERE CALLED OUT DUE OVERWEIGHT LANDING. BUT NO EMER WAS DECLARED. TEST FLIGHT COMPLETED, NO EVIDENCE OF FUMES.