Even more fun, there's some evidence that nasal congestion can be triggered by autonomic nervous system dysfunction:
"Vasomotor rhinitis is characterized by prominent symptoms of nasal obstruction, rhinorrhea, and congestion. These symptoms are excessive at times and are exacerbated by certain odors (e.g., perfumes, cigarette smoke, paint fumes, inks); alcohol; spicy foods; emotions; and environmental factors such as temperature, barometric pressure changes, and bright lights.2 Patients with vasomotor rhinitis are further divided into two subgroups: “runners,” who demonstrate “wet” rhinorrhea; and “dry” patients, who exhibit nasal obstruction and airflow resistance with minimal rhinorrhea.1 Many studies have attempted to clarify the pathogenic mechanisms for these subgroups. Current theories include increased cholinergic glandular secretory activity (for runners), and nociceptive neurons with heightened sensitivity to usually innocent stimuli (for dry patients).1 These theories have not been adequately proven. The vasomotor nasal effects of emotion and sexual arousal also may be caused by autonomic stimulation. In one small study,4 researchers concluded that autonomic system dysfunction is significant in patients with vasomotor rhinitis (P < .005)"
Even more fun, there's some evidence that nasal congestion can be triggered by autonomic nervous system dysfunction:
"Vasomotor rhinitis is characterized by prominent symptoms of nasal obstruction, rhinorrhea, and congestion. These symptoms are excessive at times and are exacerbated by certain odors (e.g., perfumes, cigarette smoke, paint fumes, inks); alcohol; spicy foods; emotions; and environmental factors such as temperature, barometric pressure changes, and bright lights.2 Patients with vasomotor rhinitis are further divided into two subgroups: “runners,” who demonstrate “wet” rhinorrhea; and “dry” patients, who exhibit nasal obstruction and airflow resistance with minimal rhinorrhea.1 Many studies have attempted to clarify the pathogenic mechanisms for these subgroups. Current theories include increased cholinergic glandular secretory activity (for runners), and nociceptive neurons with heightened sensitivity to usually innocent stimuli (for dry patients).1 These theories have not been adequately proven. The vasomotor nasal effects of emotion and sexual arousal also may be caused by autonomic stimulation. In one small study,4 researchers concluded that autonomic system dysfunction is significant in patients with vasomotor rhinitis (P < .005)"
https://www.aafp.org/pubs/afp/issues/2005/0915/p1057.html