The restaurant next door pulled 'fresh' air in about 6 ' from my
exhaust :-) It was not a good day, fancy talking, professed
ignorance, and luck worked in the end (burning sulphur really does
not smell nice when eating lunch and is a real health hazard)
That reminds me of something. There was a time when I was doing my
own refining. One day, after extracting gold out of solution and
settling silver, I decided to find out if I had any platinum in the
solution. I did not have all the required chemicals, so I decided to
substitute ammonia instead. I like to fancy myself as chemist, which
I am not, and it was one of those days. I got the most weirdest
reaction. The solution seized and became like jello. The worst part
was the smell. It was the worst, I have ever came across, and I have
experience in that area. I flush it down the toilet.
The building I was in, was mostly occupied by jewelers, but right
bellow me there was an accounting firm, and bellow them actually was
a refiner. The vapors that stuff produced were heavier than air, so
my place cleared out quickly, but it settled in the accountants
place, and they are not as hardened against nasty smells as jewelers.
So they start running around the building trying to figure out where
it is coming from. When they knocked on my door, I with the most
innocent look, told them that I am just an engraver and the most
likely source is the refiner bellow them.