The National Council on Disability Transportation Report addresses chemical and electrical sensitivities and recommends changes in policies and practices to improve access: http://www.ncd.gov/publications/2015/05042015/
This is news you can use! You can take this to bus, train and airplane companies and ask for accommodation.
“People disabled by environmental barriers experience debilitating reactions from very low-level exposures to chemicals or electromagnetic fields.” p. 207
(Department of Justice) “DOJ should develop standards and guidance on the access requirements for people with chemical and electrical sensitivities.” p. 351
“Transit agencies should eliminate environmental barriers to the greatest extent possible by using nontoxic, fragrance-free products and practices, and by avoiding all nonessential chemical and electromagnetic exposures to enhance access for people with chemical or electrical sensitivities.” p. 351
The National Council on Disability is a federal agency who advises the President, Congress and federal agencies regarding policies, programs, practices, and procedures that affect people with disabilities. This video explains more about their work.