I needed to rig a blowoff tube together for a beer that had some sour dregs pitched into it. The tubing itself was the same tubing I use for transferring/bottle filling and it had gotten some of the krausen/yeast/floating junk into it while gas was trying to get out. My question is should this tube just become my "sour tube" or is it possible none of that stuff was carrying enough bacteria to contaminate the plastic?