You don't dump your beer, for making a minor little mistake.
Your beer is hardier than that.
And you don't dump something because you
think it's going to turn out bad. You only dump a beer that you KNOW is bad,
and you give it at least a couple of months in the bottle before you even make THAT decision.
Read theses two threads that were compiled for nervous new brewers to realize that
your beers are not a weak baby that is going to die if you look at it wrong.
https://www.homebrewtalk.com/f39/wh...where-your-beer-still-turned-out-great-96780/
https://www.homebrewtalk.com/f39/ne...virtue-time-heals-all-things-even-beer-73254/
Our beer is really resilient despite the boneheaded things we do to it. And even if something appears to be wrong, often time and the yeasties go along way to correct itself.
And if everyone dumped their beer just because of a common thing like an airlock suckback, no one would be brewing.
We ALL have had sanitizer from our airlock get into our beer at one time or another. There's a ton of panic threads on here about that, and the answer is always the same, RELAX.
I think about it in terms of my time and money, I'm not going to dump 30 or more dollars worth of ingredients, 6 hours of brewing time, and at least 2 months from yeast pitch to cracking the first bottle, on what could be a minor mistake (that may not even harm the beer anyway,) until I have exhausted all probability that the beer won't improve. And even then that means at least walking away from the bottles for maybe 6 months or more.
And so far I have never beer wrong.
After all these years of brewing I still haven't had a dumper.
And I've made some big mistakes.
But I have never had a beer that wasn't at least palatable, after all that time.
They may have not been stellar beers, but they were still better than BMC or Skunky Beers in green bottles
that people actually pay money for.
So just read those threads and next time, relax, and give your beer
a chance to prove how strong it really is.