As a Father, I would try not swear about anything in front of my daughter. Sometimes it does happen, I would say the "F" word and I wouldn't realize it and my daughter would look at me and say "Daddy that's a dirty word." I would look in her sweet face and say "I am sorry baby girl, Daddy was just mad." So yes, it does happen to even the good people in the world and it is your decision if you choose to swear in front of your child/children.