Dozens of tourists, including British visitors, were rushed to hospital with toxic gas poisoning after a pump at a Costa del Sol hotel swimming pool malfunctioned, triggering a chlorine and acid release. Authorities say a circuit breaker on the pool’s pressure pump tripped, causing the system to fail and releasing gases as guests were treated at Marbella’s hospital or on site. The unnamed hotel in Benahavís near Marbella sealed the pool and remained under investigation as regional officials described the incident as a possible maintenance-related fault. The incident drew attention to hotel safety and chemical management as emergency services responded and a diverse international group of guests was affected. Some visitors reported being told the pool would be closed for maintenance, while others awaited official statements from the hospital and hotel. This incident echoes a similar chlorine leak at a Majorca hotel in 2022, underscoring ongoing concerns about pool safety in tourist destinations.