wtaf 

"In the trial, Issam Najm, an environmental engineer who specializes in water chemistry and testing, testified that the hydrazine likely formed in the "ionizer," which was just titanium tubes electrified with what looked like jumper cables used to charge a car battery."

https://arstechnica.com/health/2023/10/jury-awards-229m-to-victims-of-real-water-tainted-with-rocket-fuel-chemical/