exhalation

The act or process of exhaling; breathing out

short exhalations of breath

That which is exhaled, or which rises in the form of vapor, fume, or steam

exhalations from the earth or flowers

1894, Ivan Dexter, Talmud: A Strange Narrative of Central Australia, published in serial form in Port Adelaide News and Lefevre's Peninsula Advertiser (SA), Chapter II, http://gutenberg.net.au/ebooks16/1600641.txt For a week the party watched the flood, and each day it receded to a considerable extent. A thick deposit of mud was left behind, but though the sun shone out warmly no offensive exhalations arose.

A bright phenomenon; a meteor.