National park tourists are spending $20 on canned oxygen, and critics say the real effect is waste

National park tourists are spending $20 on canned oxygen, and critics say the real effect is waste

Travelers bound for Grand Teton and Yellowstone national parks are increasingly encountering $19.99 cans of scented oxygen in local shops, promoted as a quick fix for altitude discomfort. However, doctors say whatever relief those cans provide is short-lived, making them an expensive option for visitors seeking meaningful help. What's happening? Across gateway towns near Grand Teton and Yellowstone, canned oxygen is being sold in grocery stores,…