We just had a massive storm move in, and I have some beer dry hopping in a secondary fermenter with very little head space. This morning I noticed some beer in the airlock, thanks to the air pressure drop. I'm tempted to just leave it, but is that a mistake? Everything is sanitized, and there doesn't seem to be any opportunity for exposure to nasty stuff, but am I wrong? Should I switch my airlock out for a blowoff tube?