If you're a Christian: 1. Don't swear, 2. avoid entertainment which contains profanity.
A Tree is Known by its Fruit
If a tree is known by its fruit then avoid trees with bad fruit. Stay away from people if you know they're going to swear. Don't engage with people if you know that they're going to emit a stream of verbal effluence.
Profane, Idle False Knowledge
Something which is false knowledge, say popular science (SciPop), would otherwise be called a lie. Lying is part of a list of behaviors which are a syndrome which includes swearing.
Their Strength isn’t Right
Swearing isn't an intelligent thing to do. It's something that intelligent people who've rejected God do. They've rejected the truth that Jesus Christ died on the cross and rose again, so that we may have everlasting life.
Swearing and Lying
Intelligent people are likely to be educated, and mainstream education is to be indoctrinated with the popular science (SciPop) narrative of godless existence. Rejecting God is a very common outcome.
Words are Spirit
Clever people swear, but does this mean that swearing is clever? Can swearing make you clever? What's the cause-and-effect relationship here? How are intelligence and swearing related?
If the words that Jesus Christ spoke are words of life to those who hear and believe them, then what are swear words? The words of death? Swearing is an indicator of a soul's condition.