Some studies suggest that experiencing an orgasm may temporarily improve airflow through the nose, particularly when it is already partially blocked. According to Dr. Morgane Marc, an ENT doctor and facial surgeon, the nasal mucosa — the tissue lining the inside of the nasal passages — is rich in blood vessels and has properties similar to those found in erectile tissue. This means its volume can change depending on the size of the blood vessels supplying it. Because nasal passages are narrow, even small changes in the size of the mucosa can significantly affect breathing. A slight swelling can quickly reduce airflow, which is why people often feel nasal congestion during a cold or allergic rhinitis. During sexual excitement, the parasympathetic nervous system is activated, causing blood vessels in the nasal mucosa to widen. However, at the moment of orgasm, the sympathetic nervous system becomes highly active, which can cause vasoconstriction — or narrowing — of the blood vessels. This effect is temporary and does not treat the underlying causes of nasal congestion, such as a cold, allergy, or other illness. A 2023 study published in the Ear, Nose & Throat Journal suggests that the improvement in nasal airflow after an orgasm may be more noticeable in people who already have chronic nasal obstruction. This could include those with allergic rhinitis, a particularly sensitive nasal mucosa, chronic rhinitis, a deviated nasal septum, or enlarged nasal turbinates. Dr. Marc explains that in individuals who already have difficulty breathing through their nose, even a small change in the volume of the mucosa can be more noticeable. The nasal cycle — a natural process where the two nasal passages alternate in allowing air to pass — can also influence nasal breathing. In a healthy person, the nasal mucosa naturally swells and deflates in turn over several hours. This alternation can influence the sensation felt after an orgasm. Depending on the stage of the nasal cycle, the state of the mucosa, and individual anatomy, the effect of an orgasm on breathing can be more or less noticeable. Other factors can also affect the state of the nasal mucosa, such as changes in heart rate, blood pressure, or the use of certain medications. It is also possible for the nose to become blocked after an orgasm, a phenomenon sometimes called "honeymoon rhinitis." In some people, orgasms can cause a feeling of nasal congestion, although scientific literature more commonly describes the opposite effect. A nasal discharge can also occur after an orgasm. According to Dr. Marc, cases of rhinitis triggered by sexual activity have been described in medical literature, but they are less commonly documented than changes in nasal airflow. If nasal breathing improves after an orgasm and the sensation fades on its own within a few minutes or up to an hour, there is no need for concern. However, some symptoms may require a doctor's attention, such as if the discomfort is accompanied by nosebleeds, occurs regularly and becomes very bothersome, persists for a long time after sexual activity, is accompanied by a persistent change in the sense of smell, is accompanied by prolonged nasal congestion — especially if it affects only one nostril — is accompanied by pain, symptoms that suggest sinusitis, or other unusual manifestations, or if the symptoms gradually worsen over time. If the nose becomes blocked after an orgasm and the discomfort is mild and resolves quickly, there is no need for special action. Simply wait a few minutes — the congestion may resolve on its own. Sitting up rather than lying completely flat can help with breathing. If the congestion persists, a nasal rinse with physiological saline can help clean the mucosa and remove dust or other irritants. However, avoid blowing the nose too hard, scratching the nose, or sniffing constantly, as these actions can further irritate the mucosa and prolong the discomfort. Nasal vasoconstrictor sprays should be used with caution, as repeated or prolonged use can cause rebound congestion. If the problem recurs frequently, lasts a long time, or becomes more bothersome, it is advisable to consult a doctor.