Assertion: respiratory system's part | /r/CapableOf | bypass the blood–brain barrier
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text: In addition, parts of the nasal airways are lined by a unique neurosensory olfactory epithelium that connects directly to the brain, allowing the detection of odors (e.g., sense of smell or olfaction) but also providing an alternative route for some airborne agents (e.g., viruses, metals, nanoparticles) to enter the brain, bypassing the blood–brain barrier.