As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) F/A REPORTED SMOKE IN THE CABIN AND THAT THE FUMES WERE BAD ENOUGH TO BURN SOME PASSENGERS THROATS WHEN BREATHING. EMERGENCY WAS DECLARED AND LANDED WITHOUT INCIDENT. MAINTENANCE FOUND CHEWING GUM STUCK TO A COFFEE POT THAT WAS BURNING AND CREATING THE SMOKE/FUMES. COFFEEMAKER WAS REPLACED. NO FURTHER ACTION REQUIRED.