So, I had a thought.... I like to go over to my meads at least once a day and sniff for signs of the CO2 gasses..... The thought was.... If these things are continually pumping out CO2, then what is the risk of CO2 poisoning? I have my meads in an upstairs pantry, as it's warmer than my basement, but not too warm.... There IS airflow, but I'd still like to know.