Synonyms for Contaminant:

n.

carbon dioxide, carbon emissions, impurity, poison, effluent, contaminator, acid rain, adulterator, carbon, chlorofluorocarbon, pollutant, adulterant, emission, cfc, clean. contaminant (noun)
contamination.
contaminator (noun)
contamination, impurity, adulterant, pollutant, poison.
substance (noun)
contamination.

Other synonyms:

carbon dioxide, effluent, contaminator, carbon emissions, emission, chlorofluorocarbon, cfc, pollutant, adulterator, adulterant, acid rain. impurity. carbon, poison. Other relevant words:
carbon, impurity, adulterator, poison, pollutant, contaminator, adulterant.