I do have 1st hand experience. The symptoms range dependent on your individual tolerance to the toxins/fumes and the severity of the event. I've experienced many/most of the symptoms listed in the various research papers and aerotoxic syndrome websites.

Honestly, I'm not sure if you can "treatment" it. Some symptoms subside after exposure, some don't seem to. Try and live as healthy as possible outside the cockpit and be absolutely trigger happy with your O2 mask when in the cockpit. As for smell, different oil brands have different smells when pyrolyzed into the cabin air, so not sure what your airline cabin air will smell like when contaminated.

I hope others will chime in with more/better "treatment" info.

www.aerotoxic.org

Plus many other online references and videos. Becoming much more well known, but as a famous Boeing engineer said, it may take "Tombstones" (I think that is the term he used) before airlines, airframers, engine manufactures and regulators take action.