Today I opened up the chest freezer I’m using to ferment 3 batches of beer, and took a big whiff to smell how the fermentation was going. I got a big hit of ethanol and esters, and immediately felt quite woozy. Between the ethanol and the presumably large amounts of carbon dioxide being created, has anyone thought about the confined space dangers of a chest freezer fermentation chamber? It seems like it wouldn’t take much to create a low oxygen atmosphere in that confined space, and if that’s enough to make you pitch forward, well, things could get pretty bad pretty quickly.