I am very interested in building my own home out of as much non toxic natural materials and I have seen some cord wood building.
I have some questions and concerns that I would love to have a chance to explore!
That's great you will be aiming to reduce toxic building materials Jamie. Usually having healthy Indoor Air Quality is the main reason for that approach. Reducing exposure from building materials will certainly help but mechanical ventilation should be your main focus.
According to NIOSH, building materials account for only 4% of indoor air pollution. You should plan on providing fresh outdoor air introduction with mechanical ventilation for the best approach to improving indoor air quality.
"If you want to save the environment, build a city worth living in." - Wendell Berry