Deck stain for chemically sensitive folks - Vermont Natural Coatings / Bohme Terra Plus Deck Stain?

I'm chemically sensitive and looking for low and no odor products for my porches. Terra Plus, by Vermont Natural Coatings and Bohme, is relatively new. The company itself gets excellent reviews. Here are my details:

Western MA - fairly extreme weather

Porches are covered on top, but open on the sides

Not sure what wood. It's weathered. 

Probably had a Behr clear product on it before. Can't see a trace of it now. 

Has anyone had experience with Terra Plus? Thanks.