Could an aortic aneurism cause a chronic cough? (i read it can cause a legion on cranial nerve x causing problems in the larynx?)

Rare: A aneurysm can lead to cough, but that very, very rare. Chronic cough causes can be tough to diagnose, but don't despair. Keep working on it and you'll get to the bottom of it.

Yes, an aneurysm can: If there is an anuerysm of the thoracic aorta large enough to push or compress the recurrent laryngeal nerve you can develop a cough or a change in your voice. A cat scan of the chest should give your doctor a quick answer. A chronic cough should be checked out by a trained physician.