Starter smells strange
I am new to bread baking. My step mom gave me a book on bread, the La Brea Bakery cookbook, that had a starter recipe. The starter went great thru all 14 days. Somewhere about 16 days in, the starter smells less like beer and more like paint, pasty smell. The first bread I baked, a rustic, came out great. But my second batch of the same bread is not as great. Kinda flat and not the great beer like taste to it. I am not sure what went wrong and how I need to fix it. Any help would be great!