Ancestry hints

[JBee]

When you get a hint on ancestry and it says the person is in several other people's tree how do you discard the wrong ones?

I've just looked at a hint and 11 out of the 12 family trees have no connection but one does - so I don't want to ignore that one but would like to for the other 11.

I know you can tick a box but then what happens - I don't want to merge info.

I'm fed up of the same hints coming up when I know they aren't mine.