pass off vs emit

pass off and emit both are verbs.

Word	Noun	Adjective	Verb	Adverb
pass off	No	No	Yes	No
emit	No	No	Yes	No

As verbs, pass off and emit are synonyms defined as:

Other synonyms of pass off include breathe.

pass off (verb)	emit (verb)
expel (gases or odors)	expel (gases or odors)
come to pass	express audibly; utter sounds (not necessarily words)
disappear gradually	give off, send forth, or discharge; as of light, heat, or radiation, vapor, etc.
disregard
cause to be circulated and accepted in a false character or identity
be accepted as something or somebody in a false character or identity