A patient goes to the clinic to receive chemotherapy for cancer (the 4th session out of a 12-session course). As the patient enters the waiting room, she begins to feel nauseous and vomits. Upon questioning, the patient says, "I get queasy on my chemo day." This scenario recurs a few more times, until the patient drops out of therapy.

Chemotherapy (US): Post-chemotherapy nausea and vomiting or "PCNV" (UR)
A number of stimuli (NS) are paired with US:
Eg: Wait room + chemotherapy -> PCNV
Conditioned Stimuli (CS) and Conditioned Responses (CR):
See nurse (CS) -> Anticipatory Nausea and Vomiting (ANV) (CR)
Wait room (CS) -> ANV (CR)
Parking lot (CS) -> ANV (CR)
Smell coffee (CS) -> ANV (CR)
Perfume (CS) -> ANV (CR)