Taiwan Man’s 10-Year Thermos Leaks Heavy Metals, Doctors Blame Rust and Juice

Instead of a new thermos, the man trusted a decade-old rust bucket, loading it with acidic drinks—a choice experts now cite in 'how long do thermoses last' and 'are old thermoses safe.' Doctors warn: swap your flask every two years or risk a metallic immune system collapse, pneumonia, and an obituary written by your own kitchenware.
Thermos rust in Taiwan: man’s decade-old flask doses him with heavy metals, sparking searches for 'is rust in thermos dangerous' and 'thermos safe for coffee.' Doctors blame acidic juice, rust, and daily use—ending with a metallic twist: pneumonia by thermos.