I had some minor blow-off enter (and exit) my airlock during the most active part of fermentation. The krausen has since gone down significantly, and there is no worry of the airlock getting clogged.
The vodka, however, has turned a light brown due to the blow-off that entered the airlock.
Should I be worried about this? Should I remove, resanitize, and refill the airlock? Or is the trade-off of introducing oxygen into the carboy while doing this a greater concern?