Before revision: Classical Conditioning: Clinicians who accompanied patients' feelings of nausea with certain flavors or odors found that it restricted their nausea to those contexts .
After revision: Classical Conditioning: Patients who have become conditioned to feel nauseas after chemotherapy by treatment setting, sights, sounds, or smells associated with chemotherapy can be treated by introducing a new flavor or odor to unpair the conditioned stimuli to varying levels of effectiveness .