There's the informal word squick which Oxford Online defines thus:
verb [with object] informal
cause immediate and thorough revulsion:was anyone else squicked by the potential adoptive parents?
a person or thing that causes immediate and thorough revulsion.
From that squicked would describe the effect upon someone, and so on.
It originated in the BDSM community, as when people are deliberately engaginging in acts that would normally be considered unpleasant the issue of how what is particularly exciting to one person could be particularly disturbing to another is a vital consideration. From there it spread to several other communities though (e.g. tvtropes uses it for both audience and character reactions of disgust) but it may not be widely known.
Unfortunately, different communities seem to differ in just how disgusting they take "squick" to refer to.