I'm on day 6 of a very active fermentation (the yeast is starting to settle to the bottom. the yeast still has about 1/2 inch of foam on top of the wort). Anyway, I was in the closet getting a towel and knocked the airlock and plug out. It was open air for like 15 seconds. My concern is that I just reacted and stuck the plug back on with out sanitizing it. there is a good 1/2 foot of space between the beer and the plug at the top of the carboy. should I pull it out and sanitize or just leave it?