. and, of course, there's just walking along a city street in amongst the cars, buses, lorries, two strokes, strimmers, chain saws.
most people that take this walk eventually die from a host of maladies, but they haven't identified a specific link yet except by inference.
I probably have inhaled more oil fumes with these compounds then most folks alive today, but I'm still not sure which one of my many ills has been caused by them.