I have a acquired a very large chest freezer to use as a ale fermentation chamber. I understand the lifting in/out aspect of this, but that's not of concern to me. I was just wondering about the ventilation of the co2 from the freezer. Does any type of ventilation need to be installed or should I just not stick my head in the freezer and start breathing. Also would keeping my finished cornys (ales) in here be ok? Thanks all!