Answer: Unconditioned stimulus, Unconditioned response
Step-by-step explanation:
Unconditioned stimulus in terms of classical conditioning is the component that occurs automatically and without any intention.It's occurrence is completely natural due to the natural factors. Unconditioned response is the response or reaction that is obtained naturally and unintentionally due to the unconditioned stimulus.
According to question's scenario, air puff impacting the eyes in natural form is the unconditioned stimulus because it occurred automatically which produced response of eye blinking which was also unintentional and natural known as unconditioned response.