Do you mean that you are turned on by things that are WRONG e.g. children (if so then you DO need to see a professional), or by things odd or unconventional. There are a lot of different fetishes out there which some people may find "unpleasant" (which is maybe where you're getting the revulsion from) but which are harmless and a lot of other people may see as nothing to worry about. You may be being a little hard on yourself and if you discuss it with the right people they may understand completely.
If it's any help though, and you're certain your friends would disapprove, at the end of the day your sexual inclinations are your own business and you have every right to keep them private. Your friends should judge you more on the person you are in their lives than on private issues you wish to keep to yourself.