If you’re not a fan of it, don’t use it. I generally am not a fan of having a “nickname” as the legal name. However, in this case when one wants to use a made up name or word associated with something awful, just use the nickname if that’s you’re end goal. Names that have an “affy” sound: Daphne, Daffodil (personally don’t like this one, but all things considered, better than affluenza), or Seraphina.