Synonyms for Emission:

n.

carbon, carbon emissions, cfc, chlorofluorocarbon, carbon dioxide, effluent, acid rain, contamination, contaminant. emit, issue from, give off, give out, generate, stream, beam, spill, send out. act (noun)
emanation.
discharge (noun)
exudation.
ejection (noun)
radiation.
emission (noun)
emanation, discharge, expelling.
excretion (noun)
ejaculation, discharge, evacuation, extravasation, exudation, excretion, transudation, secretion, elimination, effusion.
expulsion (noun)
drainage, rejection, expulsion, eruption, disgorgement, seepage, exhaustion, ejection.
issuance, diffusion (noun)
ejaculation, emanation, exudation, ejection, utterance, discharge, radiation.
outpouring (noun)
effusion.
ray of light (noun)
beam.
substance (noun)
discharge.
voice (noun)
groan, whisper, utterance, murmur, cry, speech, pronunciation, voice, moan, articulation, intonation, exclamation, enunciation.

Other synonyms:

carbon dioxide, effluent, contamination, chlorofluorocarbon, acid rain, carbon emissions, contaminant, cfc. beam. carbon. dissemination
radiation.
Other relevant words:
carbon, effluent, emanation, contamination, radiation, beam, expelling.