Doesn't matter. How would taking too much drugs ruin symmetry. Do you know what it means when something is symmetrical?
Symmetry especially in this sport is a broad term it's not directly referred to as left/right exactness because nothing in nature is truly symmetrical
This is the definition from Bodybuilding.com
Symmetry - The shape or general outline of a person's body, as when seen in silhouette. If you have good sym-metry, you will have relatively wide shoulders, flaring lats, a small waist-hip structure, and generally small joints.it also includes muscle balance & proportion , arm length in relation to the torso , torso length , upper & lower balance , leg length in relation to the torso , proportion from one muscle to the next