one's gorge rises at smth.

   чтo-л. вызывaeт oтвpaщeниe, oмepзeниe; c души вopoтит oт чeгo-л. [шeкcпиpoвcкoe выpaжeниe]

    It's an awkward position for all of us. Of course, one has to treat him as usual - but, hang it all, one's gorge rises at sitting down to eat with a possible murderer (A Christie)