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I think it's a bit more complicated than that looking at the wiki article. It seems to have been very successful to begin with, but then the mosquitos became resistant to DDT and western countries have a climate advantage. Notably, they did try it in poorer countries too.

And a ton of kerosene. Spray it on all bodies of water and the larva can't breathe.

Malaria is why the first attempt at the Panama canal failed. Kerosene is partly why it became successful.

DDT was also used incorrectly. It was supposed to be sprayed on walls, so it was made to be persistent. Naturally farmers crop-dusted it on their fields, and that made it an environmental problem.

During cabin decompression, you put your oxygen mask on first, then help others.

I think the right analogy for the GP post is putting your oxygen mask on and then telling your seatmate they shouldn’t be flying due to climate change.

If all kids in your neighborhood get sick, including yours.

Do you first try to heal your kid or everyone at the same time?