What is the smell from growing beer yeast and is there any adverse effects from the odor/fumes

Question

What are the fumes from growing beer yeast and is there any adverse toxic problems?

DO you mean yeast growing in a starter? Or do you mean yeast fermenting a batch in a bucket or carboy? It doesn't matter but I am curious. — brewchez, Commented Oct 8, 2014 at 11:13

brewchez · Accepted Answer · 2014-10-08 11:16:31Z

3

You are smelling esters, aldehydes and sulfides at different levels. There are a host of many other compounds that might be coming out too.

It is not harmful.

answered Oct 8, 2014 at 11:16

brewchez

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3

Also, uh, CO2. :)
– jsled
Commented Oct 8, 2014 at 13:14
1

CO2 doesn't have an aroma really. It'll burn your nostrils if you get a good face full of it, but otherwise its odorless.
– brewchez
Commented Oct 8, 2014 at 14:21
@brewchez mentioned sulfides. They can smell like rotten eggs. They are prominent in lager brewing and be a big surprise when you open your fermentation chamber/cupboard and that smell attacks you! :) Remember, if you can smell it then in is no longer in your beer.
– Atron Seige
Commented Oct 9, 2014 at 6:47

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