If you think New york City smells now, be glad you weren't around in 1910. City sewer monitoring consultant Matthew Frank created this map, which breaks down the various smells New Yorkers reported back then based on information from the Metropolitan Sewage Commission. During this time, the state used this data to improve harbors and overall public health.
Noted smells included illuminating gas, hydrogen sulphide, fecal odor and strong fecal odor. According to Frank, this was the only year that the city recorded this type of data. Maybe New Yorkers just got used to the smells over the last century.
Play around with the map here.