Hi all, new to fermenting. I recently got a chest freezer to use as a fermenter seen as I live in a hot climate and it currently has a number of 1 gallon batches of beer / cider. Whenever I open the lid now there is a strong smell which I assume is co2. I’m wondering if this or anything else that has escaped the air locks may effect any food I ferment in the freezer? Especially if I am leaving the fermenting food only covered with cheese cloth. Any advice would be appreciated.