It was the moral equivalent of a fart in a hurricane. The "hurricane" was the explosion of the Mount Pinatubo volcano in the Philippines in 1991, which boosted 17 million tonnes of sulphur dioxide into the stratosphere.
The sulphur dioxide didn't hurt anything because there are no living things in the stratosphere.
Moreover, it stayed up there long enough, reflecting some incoming sunlight, to lower the average global temperature by half a degree Celsius for about a year.
