There is mold in my bucket of paint. Can I still use the paint?
Try using a spatula and clean off the moldy area, it might just be some rust, without disturbing the rest of the paint so you don't mix the mold/rust in. Once it's cleaned up, stir the paint and determine if the texture seems right and then paint a scrap piece of wood and see what it looks like. The fact that you don't have the acrylic smell means the chemicals that keep the paint liquid and spreadable have weakened and that's not a good sign. You've waited a year, try a test spot and see what it looks like...