The Infibit Air is the sky above the Infibit Island, and since the Infibit Island is infibitly endless in only 2 dimensions (it's pretty much a flat surface), the Infibit Air is infibitly endless in 3 dimensions, as it goes up as well.
Strange Properties[]
The Infibit Air has strange properties. Any entity that manages to get here and breathes the air will feel overwhelmed, so overwhelmed, very overwhelmed, that the entity dies. Eventually, we learned that this is because the Infibit Air is made up of infibitly more oxygen than our planet or the Earthverse has.
If an entity gets into a cloud, the entity will get very, very overwhelmed, that the entity dies, probably because of the water vapor. Eventually, we learned that this is because the clouds of the Infibit Air is made up of infibitly more water vapor than our planet or the Earthverse has.