Do most people just write sentences and then just not even bother to read what they've just written back to themselves to make sure the sentence makes sense?
If they think too much they might realize even Wikipedia acknowledges how the US and other nations used certain gases as delousing agents:
1917 Bath Riots occurred in January 1917 at the Santa Fe Bridge between El Paso, Texas and Juárez, Mexico. The riots are known to have been started by Carmelita Torres[1] and lasted from January 28 to January 30 and were sparked by new immigration policies at the El Paso–Juárez Immigration and Naturalization Service office, requiring Mexicans crossing the border to take de-lousing baths and be vaccinated. Reports that **** photographs of women bathers and fear of potential fire from the kerosene baths, led Carmelita Torres to refuse to submit to the procedure. Denied a refund of her transport fare, she began yelling at the officials and convinced other riders to join her. After three days, the discontent subsided, but the disinfections of Mexicans at the U.S. border continued for forty years.
[...]
Between 1915 and 1917, typhus (which was sometimes reported as typhoid fever) spread from Mexico City to the provinces from Veracruz to Jalisco.[3]
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During the same period, Thomas Calloway Lea Jr. was elected as the mayor of El Paso, Texas. Lea sent telegrams to U.S. Senators in Washington demanding a quarantine be put in place to stem the tide of "dirty lousey destitute Mexicans" who would spread typhus into El Paso.[7] The Public Health Service Officer for El Paso, Dr. B. J. Lloyd, admitted there was little danger and opposed a quarantine, but suggested opening de-lousing plants.[8] U.S. officials quickly adopted a policy of sanitizing Mexican immigrants at a disinfecting station in El Paso.
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Men were separated from women and children into separate buildings, where they were stripped of all clothing and valuables. Most clothing and valuables were steamed. Other items which might be damaged by steam (like shoes, hats, or belts) were exposed to cyanogen gas. Attendants examined the **** people for lice.[9] The officers conducting the strip searches were rumored to have photographed the **** women and shared the photos to others at bars.[11] When lice were found on a man, the man's hair was clipped close to his head and the clippings were burned. For a woman, the hair was doused in a mixture of vinegar and kerosene, wrapped in a towel, and left on the hair for at least 30 minutes. If lice were found on re-inspection, the process was repeated. Once attendants declared the lice test had been "passed", the naked people were gathered in a bathing area and sprayed with a liquid soap made of soap chips and kerosene oil.[9]
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After the U.S. entered World War I businessmen were able to lift the 1917 immigration terms for Mexican workers and the exemption lasted until 1921.[24] However, the bathing and fumigations, which later used insecticides and DDT, continued into the 1950s[8] and in the 1920s, authorities at the Santa Fe Bridge fumigated the clothing of Mexicans crossing into the U.S. with Zyklon B
https://en.wikipedia.org/wiki/1917_Bath_riotsAn earlier version of the article made the part about Zyklon B more clear:
The riots were sparked by the practices of the Immigration and Naturalization Service, which required Mexicans to "strip naked and be disinfected with various chemical agents, including gasoline, kerosene, sodium cyanide, cyanogens, sulfuric acid, and Zyklon B before gaining entry into the United States." Zyklon B, (a trade name for hydrogen cyanide) was the fumigation of choice for clothing and bedding on the U.S.–Mexico border, and was later used in the gas chambers of Nazi Germany. Police officers were also accused of taking and sharing **** photography of Mexican women bathers.[1] A year earlier, 50 Mexicans had their bodies sprayed with gasoline and set on fire, causing 27 of them to burn to death.[2]
https://en.wikipedia.org/w/index.php?title=1917_Bath_riots&oldid=1011116009Hmm, a few people in the US were burned and died from cruel application of chemical delousing agents. It is easy to imagine a handful of prisoners in Germany were similarly doused in a cruel manner by certain guards, leading to their deaths, and these stories were then blown so out of proportion that a delousing agent used by the US and worldwide somehow became the most deadly murder weapon ever created. Lol.
In particular, the Wikipedia article saying people were stripped of their personal items that could be damaged by the sanitation process sounds almost identical to the concentration camp narrative. Obviously the prisoners are going to be scared and confused and may not have any idea about how the sanitation process works, allowing the "survivors" to just make **** up. But these same sanitation processes were used outside of Germany, and yet no one bothers to think that maybe...some historic revisionism and sloppy sources have cooked up an incorrect narrative... Hmm