have one and its lasted for 2 months now, started mild and now cough about 10x a day, I think it's just the air quality in the home, and upon research believe it might just be walking pneumonia though haven't got an official diagnosis from the doctor who just dismisses it with "you're probably fine just get some fresh air", with other symptoms such as chest pain/tightness, joint pain. but not taking enough vitamins everyday is probably what causes it, just whether i can be bothered with it really