Erm, how does that work? Association with himself?
Note, I'm like NS, I don't have the answers here, I didn't initially have a strong reaction to the painting but on stopping and thinking about it, there are questions that lead to other questions, memories, ideas. I guess our response to art is often formed from personal experience. And that doesn't make something ok just because It Is Art.
Yes, you are describing a subjective interaction with the art, which is what art is mostly about - here it doesn't matter what the subject or content of the art is, it could be beautiful or utterly vile. OK or not, when deciding whether it should be available for viewing or destroyed, it is the objective, real life, evidence and consequences of distribution that must be considered - not how it makes any individual feel.
"The Ring" is a great or horrible film depending on whether you like to be horrified or not, as such it is shown in cinemas, distributed on video and generally available to consenting adults. However, if someone was actually in possession of the video within the film, that kills whoever watches it, it would, obviously, be best to destroy it asap.