Yes, after a dry burn you need to use your favorite wet method again to rid the atomizer of the burnt flavor. How long to wet clean it depends on your method.
Also, with regular dry burns there's a smaller amount of dried up burned on fluid, so the burnt taste is less. Go a long time between dry burns and you have a lot of dried up grunge, so the burnt taste is stronger.
Also, liquids closer to colorless and clear produce less dried gunk.