Obscenity

An obscenity is a word that is considered offensive for use in public conversation. It may be a vulgar reference to a certain body part, or it may be a derogatory reference to a person of a certain people group.

Mainstream Smurfs Media
The word "smurf" may be used as an obscenity in various cases of certain context in mainstream Smurfs media.

Empath: The Luckiest Smurf stories
The Smurfs in the EMPATH: The Luckiest Smurf occasionally use obscenities in their speech, but only in certain private discourses and rarely if ever in public before mixed groups of people. Tapper finds obscenities rather unbecoming of a proper Smurf and thus would hardly find himself in needing to use one.