Hi dark_eyes, welcome.

I can partially sympathize; I do not have multiple chemical sensitivity (MCS), however there are a few things I've responded strongly to, and I'm very familiar with migraines & triggers.

Just so you know, there is a forum here for Allergies & Multiple Chemical Sensitivity.

I've also been to a holistic doctor who did not take insurance. I admit I'm curious what all s/he did that came to $1000 IME, despite the initial confidence in being able to help me (different issue), it turned out to be a sales pitch and money pit. I hope your experiences are better.

If you don't mind (it's up to you) a few questions...

Are you on any medications/supplements?

Are all your triggers olfactory, or are there others (skin sensitivity, foods, medications, etc.) as well?

Are you being treated for any anxiety and/or depression disorder?

Are you a veteran?

Has anyone (doctors) investigated acephalgic migraine (sometimes called "silent migraine")?

Doc