Alright, a little clarification if you don't mind.
Listing allergies as part of an emergency form once you're hired should be completely legitimate if asked in the context of needing to know in order to address it as part of emergency management.
When you say government position were you a salaried direct employee or were you contract?
When you reported you say that the response from EEOC was that they did not essentially have actionable evidence. That is a reasonable response and it happens all the time in any type of instance involving some sort of violation whether civil or criminal. What it may mean to you in practical terms is a problem in meeting evidentiary requirements. I know not what you submitted to them nor what their threshold is, which is why I advocate you becoming fluent in EEOC procedures, organizational structure, requirements as well as DOJ. You have to be able to interpret and respond in like fashion.
This is all predicated that you want a standard office job. Even if you don't, I would think it prudent to understand at a more root level what it takes to fight when you must make a stand all alternatives are taken off the table.
One thing to keep in mind that the job market is tough for anyone right now. Taking that in to account what you're dealing with is keeping a job under the duress of consistent violations of ADA creating employment barriers and that's not okay obviously. You could definitely go the way of being your own boss start your own business, find an industry that allows you to more free of a standard office space in which case I would seek official accommodations to be retrained if that's what you want and you can't do it any other way, it's all a foggy crystal ball because I don't know what it is you do and if it is a skill set that makes you fireproof or if it's more generalized. And I don't really need to know you just need to decide how you want to go at this.
Industry change to avoid office situation
Maximize and leverage laws in your favor while increasing evidence gathering and presentation skills per outlined requirements
Entrepreneurship
I can think of a lot of jobs that would probably fit the bill like mail carrier route, sales jobs, real estate agent, US Forest Service in the field, GIS civil engineering or surveying. Likely you would develop a comprehensive approach that incorporates nearly all options as you move closer to retirement age you will probably have more indoor work in the long term.