I was going OCD over a spec of something at the neck of my carboy. I wanted to use something sterile to remove it so I dipped a Q-Tip in distilled vinegar and swabbed it out. Turns out whatever was in the carboy was some type of solid. I don't think it was growth. Now my concern is that I shouldn't have used vinegar. Should I worry about it or was this a safe thing to do?