Can you tell me what to expect with someone who has had strong shortness of breath after quitting smoking for 2 weeks?

Should get better. But it is common for cough and sputum production to increase after stopping smoking, because your lungs are now able to clean themselves out from the crud you have been putting down there. The coughing can feel like shortness of breath. Don"t start again because of this. You will feel better and better after a few weeks, and the health effects will be the best thing you can do for yourself.