Despite all types of methods, they couldn’t get it to spread from sick to healthy.
Even in 1919 youcantcatchavirus.com. You still can’t catch something you have within you to help repair your terrain.
Clearly, those that were sick were all reacting in sympathy to unique environmental traumas to their system – like chemical poisoning or nutritional deficiencies.
This article, Spread of the Spanish Flu Was Never Experimentally Confirmed, has details and evidence that I was searching for. It is written by Shin Jie Yong, a Malaysian “postgrad” in neurobiology. It is important to note that Yong is a proponent of germ theory, and since these results fly in the face of that theory, he doesn’t understand or accept them. He merely walks away from the evidence saying “We’ll probably never know the answer.”