Answer:
Nothing
Explanation:
A television ad is designed to make you want to buy something.
The actor may have been filmed in a studio in front of a green screen with the grassy, flower-filled meadow added afterward , or they may not even be allergic to pollen.
Even if the scene is legitimate, the use of one subject proves nothing. You need a number of subjects in a carefully designed experiment to make a statistically valid conclusion.
