hmm.. so does anyone know if the epoxy coating on the inside is dangerous?

All manufacturers of these type of fuel bottles use a similar inside coating. As long as you use it for fuel, e.g., alcohol, kerosene, & white gas, you'll never have a problem. Problems occur when people store acidic fruit juices in them & then drink the juice. At one time Sigg used a coating that could be used safely for multiple liquids. This was the red anodized bottle, not the plain aluminum one.
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