The smell from store-bought cooked noodles is not spoilage but an alcohol (ethanol) smell used for preservation; it disappears when you rinse them thoroughly in cold water.
Since the sourness of kimchi varies from household to household, it's best to taste and adjust the amount of kimchi brine accordingly.
Recommended for π
βThose who want to enjoy a refreshing kimchi mari noodle dish without making a complicated broth.
βThose looking for a sweet and tangy noodle dish during the hot summer when appetite is low.