I would love to run in an athletic sport if i did not have COPD.
What is COPD?
Chronic Obstructive pulmonary disease, which is also called empysema, is an obstructive lung disease which makes it hard to breathe.
I am sorry that you have that, is it from smoking?
Tobacco smoke contains a lot of chemicals, my doctor says it's from smoking, but if you had asthma as a child, you are more prone to get it.
Oh wow, can it be cured?
No, COPD just gets worse and worse until it kills you.  However, with exercise and quitting smoking, you can extend your life to some extent.
How much can you extend your life by quitting smoking and exercising?  Is there an estimate?
That is unknown.  Tobacco is the leading cause of preventable death worldwide, but smoking cessation is difficult.
I bet but I hear there a lot of good alternatives out there.  Is vaping suggested to you?
The medical professionals are split on that. On one hand, it cuts down on smoking, but it addicts children to nicotine, and that leads them to smoking.