You can’t let your kids live in a bubble. Eventually, it will be popped by something beyond your control and they will have to deal with the outside world. If your children need to walk around with a fainting couch, just in case they hear someone use a bad word, you have failed as a parent.
Better to introduce the outside world to them on your own terms.This takes discipline, wisdom, and patience. Not easy, but doable, as long as you don’t mind doing it imperfectly.