Generation of electricity that could otherwise be conserved introduces more harmful greenhouse gases and other noxious chemicals into the atmosphere from the powerplants that consume fossil fuels.
Heavy industry pollutes our rivers with noxious chemicals.
It releases lots of soot and various noxious chemicals as it burns, and so has fallen out of favour in many Western countries.
Greenhouse emissions do not poison people, or lakes or woods, in the direct or obvious way that noxious chemicals do.
Emissions of greenhouse gases and other noxious chemicals are a worry.
To make safe by eliminating poisonous or otherwise harmful substances, such as noxious chemicals or radioactive material.
Constant moisture and noxious chemicals ruin displays.
noxious chemical wastes; noxious ideas.
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