A number of people have reported a problem with the cooking oil in their backpacks and backpacks, according to the Consumer Product Safety Commission.
The oil can cause breathing problems, including heart palpitations, and can also cause breathing trouble for those with asthma.
“It’s a common misconception that backpacking cooking oils are safe and that they are completely harmless,” the FDA said in a statement.
“However, this is not the case.”
People can buy cooking oil online or through drugstores.
“The Food and Drug Administration is taking this very seriously,” the company said.
“We encourage anyone experiencing any health problems related to the use of backpacking oils or other cooking oil to call our toll-free number or visit a local emergency room.”
Backpacking and cooking oils have been around for at least 10 years, but it’s unclear what causes it.
One popular online recipe calls for coconut oil to be mixed with water, coconut milk and lemon juice.
Another recipe calls a mixture of vegetable oil and olive oil, but both ingredients are listed as non-GMO.
“When we first started backpacking, we had to make sure our backpacks were in good condition before we would use them,” Jessica Lee, a Backpackers Anonymous volunteer and member of the COSCO volunteer group, told CNNMoney.
“That’s what really kept us going.
You have to know what’s in it before you go out and you have to be careful about what you’re putting in it.”
Lee, who now lives in Utah, told the network she was concerned about the potential for poisoning from backpacking oil.
“If you don’t know what you are putting in your backpacking or cooking oil or what it will do to you, it’s a real hazard,” she said.