It won't necessary ruin your chances. It still comes down to how you compose yourself around others. Make a joke about it to lighten the mood and not have it be the elephant in the room. You'll want the ones that don't mind it, the ones that care you're better off not even wasting your time on. They tend to be shittier people overall. The gym has helped me out a good amount these past years and built some confidence as well :) Try working on yourself first.