I act super disgusting around people I don't want to be friends with
What's the reason behind it?
I want them to feel revolted and stay away from me.
If you do not want to be around people you should tell them or leave. There is no reason to disgust people to keep them away from you.
It's so much better to keep them away leaving them disgusted. Take it from me, I know what I'm doing.
I think if you are very clear about not wanting to be around people they will respect that and you don't have to resort to this behavior.