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Ammonia produces NOx when burned. You think CO2 is bad that stuff is absolutely nasty. I don't know why that would be an improvement.

• Retric 5y ago
  You get NOx from burning most things including hydrogen. It’s can form from atmospheric Nitrogen and Oxygen combining at high temperatures such as found in flames. You do produce more or less with various types of fuel but production isn’t the issue it’s failing to get rid of them afterwards that’s the problem. They are unstable breaking down either in the fire making complete combustion important, but a catalytic converter or at worse just the atmosphere works. They last just long enough to be a problem locally. But that also means people have local incentives to fix the issue unlike CO2 which has a much larger tragedy of the commons issue.