At first, the video displays the virtual insides of a crowded passenger airplane. Then all of a sudden, one of the passengers seated in the middle "sneezes." Hundreds of multicolored particles are jettisoned into the air, creating a rainbow-speckled cloud that lingers above everyone’s heads. The cloud dissolves, and the particles disperse, making their way to the unlucky few seated adjacent to the sick passenger.
By the end, the particles have spread all over the cabin, but it's the people seated to the left and to the right of the "sneezer" who are at the highest risk of infection.