Atmosphere (n.) of a word is a picture of its use.
An Atmosphere (n.) that is inseparable from its object is not an atmosphere.
An Atmosphere (n.) can be constructed to attach to anything — 'an indescribable character'.
Atmosphere (n.) of a word is figurative but clear: 'knoif' feels different from 'knife', though both name the same objects.
An Atmosphere (n.) inseparable from its thing is not an atmosphere; we could not imagine Goethe writing the Ninth Symphony without absurdity.
An Atmosphere (n.) of a sentence appears only when we imagine saying it differently — and the picture of it stays clear only so long as I do not look at what my memory says really happened.