People with chronic rhinitis can swim, but it is advisable to refrain from swimming during an acute flare-up. If it's just ordinary chronic rhinitis without noticeable acute inflammation, swimming is possible and may even be somewhat beneficial for rhinitis. However, attention should be paid to the cleanliness and hygiene of the swimming pool. If the pool is not up to hygiene standards, water entering the nasal passages can exacerbate existing rhinitis or trigger an acute flare-up. Therefore, this is a point of concern. If it's just ordinary chronic rhinitis and the pool meets swimming standards, swimming should be fine and not particularly harmful to either rhinitis or overall health.