i am a 55 year old male ,overweight ,don't smoke but am a welder i take pills for gerd and have endoscopys and ever since the last one about two years ago i have had bronchial soreness my doctor checked me for pnamonia and did not find any b,now i am having troubl ut still put me on a month long antibiotic for infection, it helped some but i have never felt the same,in the last year i started removeing rust on old cars with molasas and then spraying with muriatic acid to leave a zink coating , i also have lost 4 people in my family in the last 5 years do to cancer and heart failur now i am have trouble catching my breath and am hyperfenting a lot ,could this be viral, bacterial heart failure ,cancer? or stress.