Actually, snorers may wake up if their snoring is loud enough. Though this type of sleep interruption usually only lasts a few seconds, so they’re unlikely to recall it later. Another explanation for how snorers may sleep through the noise is that their brains filter it out. The brain gives different noises different levels of attention, such as prioritizing the sound of your name over a random word. Noises coming from your body might be deemed unimportant, as opposed to environmental sounds.