Calum Macdonald never imagined that a fun trip with friends to Vang Vieng, Laos, would turn into a nightmare. After enjoying free shots at a hostel, he experienced a "kaleidoscopic blinding light" before realizing he was going blind. Now, at 23, he shares his story to raise awareness about the dangers of methanol poisoning.

His group was unaware at the time that the drinks could be laced with methanol, a toxic alternative. Unfortunately, six people died from methanol poisoning linked to the hostel, including two Danish tourists he had met.

Calum recalls his confusion when he realized he couldn't see: "Why are we sitting in the dark? Someone should turn a light on." But the lights were already on, signaling the severity of his condition. He has since teamed up with families of others affected, including Simone White, who died after her mother rushed to Laos for urgent care.

Methanol, often found in household products, is deadly if consumed. Symptoms can mimic a hangover, making it hard for many to detect poisoning until it's too late. Experts warn that even small amounts can be fatal, highlighting the risk for travelers in Southeast Asia.

Calum now advocates caution, advising tourists to avoid free drinks. The Foreign Office acknowledges methanol poisoning as a serious issue, working to inform travelers of the risks. As Calum learns to navigate life without sight, he continues to push for awareness, hoping to prevent such tragedies from occurring again.