I have COPD. I was breathing great until I was recently exposed to smoke from a house fire. I was wearing a paper mask while working in my barn organizing some tools. I suddenly smelled what seemed like a strong smell of smoke. I wasn't sure so I took another breath through my nose and it smelled like really thick smoke. So I quickly walked outside and saw the house on the adjoining property was engulfed in flames. The house on fire sat about 500 feet away from my barn. I stood there holding my breath and watching for a moment while a thick brown cloud of smoke hovered over my barnyard. Without breathing any more breaths I jumped in my pick up and exhaled. Prior to taking another breath I quickly put on a dual chambered respirator. I then walked upwind getting completely out of the smoke. I suppose I ended up breathing in about 3 or 4 breaths of smoke polluted air before I was able to get to my respirator. At the time I didn't think that much of it because the smoke didn't seem to effect me. But the next day I noticed I became fatigued just getting a few things out of the back of my van. Then walking back from my van to my shop I noticed I became short of breath. The following day after that I noticed I was very short of breath while at work. It has now been 3 weeks since the smoke exposure and I still feel short of breath with less than usual air flow. I have chest tightness and sometimes feel like I am almost suffocating. I feel like there just isn't as much air flow as I had prior to the exacerbation. Another symptom is that I constantly feel lightheaded. My oximeter says my oxygen levels are around 96 to 98%--even with activity. Since the symptoms have began I have taken a tapered dose of Prednisone and started taking Symbicort. I finished the Prednisone about 4 days ago and stopped taking the symbicort about a week ago. At this time I am not taking any medications at all. My primary doctor has became my Pulmonologist--but he has been on vacation. So I went to a walk in clinic to have them listen to my lungs. The doctor said that my lungs sounded very clear. His oppinion was that the amount of smoke I described inhaling would not have done new damage to my lungs. He felt that I have exacerbated my lungs and they would probably return to the level they were prior to the smoke exposure. But after 3 weeks I am very scared and I feel terrible. I have plans to see my Pulmo this coming wednesday where I intend to ask for a new xray, ABG, and possibly Spirometry test. The reason for my post is I would like to other opinions. I guess a few of my questions would be as follows: 1# Does it seem likely that the smoke exposure I described would cause new lung damage, or is it more likely I am experiencing temporary symptoms? Its been 3 weeks--Is that an indication that these symptoms may be permanent, or is it possible to have a symptoms last this long and eventually go back to normal? I guess what I am trying to understand is the probabilities of permanent versus temporary symptoms from an acute smoke exposure like I have described?