wow this sounds terrible. i have a gradfather still alive (barely) who is 87, recently came out of the hospital after a bad breathing problem; when he was in his 20-30's he was diagnosed with asthma and so used an inhaler the rest of his life. he worked manufacturing bowling alleys and often spent the night at those alleys sleeping in the areas he had just been working on filled with dust and varnish and grease. as it turns out this last breathing problem they diagnosed him with COPD and put him on oxygen for 3weeks.
i had not thought this profession was one of so much potential problems; jsub, AJEL, i wish you guys the best. thanks for the heads up!