curse, hex, spell, hoodoo, jinx, disagreeableness, distastefulness, obnoxiousness, offensiveness, unpleasantness, repulsion, repulsiveness.
Examples of usage:
— The Dark Forest, Hugh Walpole.
When she smiled there was great charm but so it is true of many women.
— Hetty's Strange History, Anonymous.
He had become so used to Sally's sweet sad face, that he did not know how great a charm it held for others; and he had never seen in her the manner which she now wore to every one.
— The Enchanted Canyon, HonorÃ© Willsie Morrow.
Keep your charm, old man.