Why is it that on a normal day, I walk around the financial district, and some areas along Market street, and pretty much anywhere near these areas, the air smells terrible. I smell feces from the sewer vents and sidewalks from who knows what. Can this city do something about this? Whenever I am in other cities such as L.A. or Sacramento the air never smells as bad as S.F. It just seems like every day that the smell is there and it is just disgusting that the odor is there on your way to restaurants or on my work break and unless you walk far from the financial district or just stay indoors, you can't escape it.