He also said humans seem to be more sensitive to ozone than rats.
"How much of that disease is due to ozone?"
Several federal agencies have established health standards or recommendations to limit human exposure to ozone.
New York is high on the list of metropolitan areas where additional attention to ozone is needed.
Long-term exposure to ozone has been shown to increase risk of death from respiratory illness.
Reactions are even more severe when exposed to ozone in the open air.
The result is a high quality data set usable to derive trends with respect to total ozone.
But we don't have any shots to reduce people's sensitivity to ozone.
"We have protests here all the time for everything from recycling to ozone to social justice," he said.
The nice smell that you associate with baking bread is actually due, in a part, to ozone.