I do have a Story and then a Question: Story part: I recently learned I have a illness with called Paroxysmal nocturnal hemoglobinuria (PNH)it is a rare disease in which red blood cells break down earlier than normal. I have read that benzene can cause these types of symptoms. I was a Jet Engine Mechanic from 1970-74 so I had 4 yrs of exposure to this stuff - but can it rear it's ugly head 40 years later? We use to use a cleaning solution (I don't recall the name but it was P-something). We u