The most common mistake people make is to subject persons with sensitivities to a reverse onus when they report their experience of repeatable, controllable circumstances, contrary to ethics, social convention and laws since the Magna Carta. This practice is unethical in any context, but becomes especially damaging in clinical medicine.
Ignaz Semmelweis saved the lives of thousands of women decades before Lister discovered the role of germs in disease. In fact, contrary to how it's taught in most science courses, infection was a known cause of disease and death centuries before Lister identified the role of germs.
Institutions charged with addressing attitudes betray their constituencies by remaining silent while their funder promulgates lethal misconceptions. At Women's College Hospital, for instance, long-known mainstream knowledge is obscured behind revisionist models. Persons with sensitivities are robbed of their history. Separate health issues are arbitrarily confused.
For every 100 professionals who offer to help, 98 will want to use you as needs substantiation for flaky theories, dangerous clinical practices or the unethical sale of treatments and medicine. The Canadian Society for Environmental Medicine has replaced the actual history with a self-aggrandizing revisionist version that invisibilizes patients' right to protection.
Researchers at the University of Toronto accepted money and pretended that things already known were not known. They accepted money to research things they knew or ought to have known were impossibly defined. They allow the damaging misinterpretation of their work by funders.