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.
Metaphor
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.
Atum is the name of this god
It is personification without meaning to use personification
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 is a literary term in which inanimate objects are given human-like characteristics. An example of personification with a snowflake would be: The powdery snowflake seemed to dance and giggle it drifted through the air.