Hello. I had a really bad cold that I thought might be the flu about three weeks ago; aches, pains, 100 degree fever, headache, cough that sounded like I was choking to death. It cleared up in about 10 days or so but several times over the last three weeks, anytime I get a whiff of anything strong, perfume, gas fumes, cigarette smoke, etc., I start coughing, deep in my chest and it feels like something should be coming up but nothing is and I taste metal. I'm not on any medications or allergic to anything. Could it be pneumonia or something along those lines. Please and thank you for your time.