What produces the odor in ethanol fermentation?

Question: What produces the odor in ethanol fermentation?

Answer: During ethanol fermentation yeast brakes down sugars and starches into ethanol and carbon dioxide. The only smell you should detect is the ethanol vapor. If other scents are detected during fermentation this is a sign that you are not producing ethanol but might be encouraging a different yeast then you intended, or there is some other form of contaminate in the fermentation chamber.

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