Partner had accident 2yrs ago, fractured t9 ribs and "small" lung puncture. no surgery. ongoing minor cough all seasons ever since. any correlation?

See below : Usually a small pneumothorax that did not need any type of invasive treatment such as a thoracostomy tube does not have a residual sequeli . You should probably check with a pulmonary specialist to see if there's any other etiologies. Good luck thank you.

Probably not: An isolated rib fracture and small pneumothorax should leave no lasting effects. If the cough is productive, especially mixed with blood, the initial injury may have been more severe than described. Follow up with your primary physician or get seen by a pulmonologist for a more complete examination and testing.