Gero Gero no Mi

The Gero Gero no Mi is a Paramecia-type Devil Fruit eaten by an unnamed reader of One Piece.

In a SBS question, the reader said that he/she ate a fruit, and from that moment on, no one came near him because he was so disgusting. Eiichiro Oda answered the question by saying it was the effects of the Gero Gero no Mi (Gero Gero Fruit).

"Gero" means "disgusting".