507c. effervescent, proceeding from leg and tail of the Great (One) who is in splendour.
508a. N. is come to his watercourses, which are in the land of the flood, in Mḥ.t-wr.t,
692c. He is effervescent; he is effervescent; Shu, let thy arms be about N.
868b. thy water, thy cool water-libation is the inundation of the Great One (who) which is come forth from thee.
22a. This is thy cool water, Osiris; this is thy cool water, O N., which went forth from thy son, which went forth from Horus.
1553b. They tremble who see the inundation (when) it tosses;
1554a. (but) the marshes laugh; the shores are become green;
1554b. the divine offerings descend; the face of men brightens; the heart of the gods rejoices.
The builders said many times where the water came from; an effervescent cool water source that tosses on the Giza Plateau.
They even said what caused it to toss;
2109. The sky trembles, the earth quakes before the god, before N.
2110a. N. [is not enveloped] by the earth;
2110b. ’Iḫ.t-wt.t, thou art not enveloped by the earth.
2110c. Thy fame is by day; thy fear is by night, as a god, lord of fear.
It was "’Iḫ.t-wt.t," that caused it to toss. This word means "risings begetter" because it caused bread to rise, foam on beer to rise, and Osiries to stand at Giza.
We can't see it but it's still carbon dioxide.