The best way to block snoring noise is to use earbuds rather than to soundproof an entire room. Earbuds for sleeping should be designed to be comfortable while laying on a pillow and safe to use all night without Bluetooth connection. Look for earbuds that use passive noise canceling (simply having an earplug in your ear to quiet the noise). That can be combined with noise-masking devices (such as a sound machine that plays white noise or relaxing sounds) to soothe the brain and further mask any remaining noise.