The air was whistling as it passed through the open door
No, "excitement in the air" is not a personification. Personification assigns human-like qualities to non-human things. In this case, excitement is being used metaphorically to convey the feeling of anticipation or energy in the atmosphere.
personification was the only choice. But no one was ready.
Personification
There is no "god of air" The Greeks didn't know what air was. You are probably thinking of Zeus, god of the Heavens and personification of the sky. His wife was Hera.
It is personification without meaning to use personification
Atum is the name of this god
The smell of cinnamon danced through the air, wrapping everyone in its warm embrace.
There is no personification going on here.
A personification of a cold rainy day could be a gloomy figure draped in dark clouds, with rain falling like tears from its eyes and a chill in the air that pierces through to the bones.
No, personification does not have a prefix
personification
Personification for volleyball could be: "The volleyball danced through the air, eager to find its perfect spot on the court." An example of alliteration is: "Vigorous volleys vibrated across the vast volleyball venue."