Made sure to visit earthship central outside of Taos, NM and my favorite part of the architecture is the permanent garden in the front. One definitely needs to make peace with the odor, but I love the smell of a greenhouse anyway.
no, the tires are well sealed behind adobe. The smell is from the huge amount of super healthy wet soil all along the windows, its the primary thermal sink for the passive solar and there is a LOT of it. IIRC, the guide said there was about 10 cubic yards in the planters, which is a standard dump truck.