My first batch of trad mead is sitting in a 10lt carboy in the larder. It's been there for about a month. I planned to rack it into another carboy in a couple weeks or so as some sediment has now formed.
Anyway, I went to check on it yesterday and found the bung on the floor. It had obviously blown off at some point, probably because of a hot spell we're having restarting a bit of fermentation.
I don't know when exactly it blew off but I do remember hearing a sound from that room a few days ago and not being able to work out what it was so I'm pretty sure it was the bung, so it's probably been off for 2-3 days. I sterilized it and put it back immediately.
The level of the mead in the carboy means that the surface area exposed to the air is small, only about 4 square inches (the area of the neck of the carboy), and I'm assuming that if it was a fermentation restart that blew the bung out, there would also have been a layer of CO2 sitting on top of it anyway. Can't see that any bugs or whatever have crawled in but I suppose a little dust will have settled.
Do you think everything will be ok with it?