My AH did something similar. He has a bowel problem and thank goodness we were at the beach camping when it happened. My niece saw him at the river with his brother who was helping him clean out his shorts, she came back to camp to tell me about it. I should not have told her not to mention it but this was a few years ago and I was clueless to the situation. At first I was embarassed but that passed quickly. My pants were clean!!!! To this day I don't think he remembers and even if he does it has not made a bit of difference. Don't hide what is going on and don't take the actions of another on yourself.
Zoe