Some tourists thought bear spray (pepper spray) worked like bug repellent and sprayed the hot chemicals all over their bodies.

"I was in a National Park at the visitor's center. Suddenly, there's this huge commotion and a lot of screaming from the lobby. I head over to find an entire tourist family crying and screaming and the park staff trying their best to manage the situation. Then the air shifts and it hits me. They had applied a liberal amount of BEAR SPRAY all over themselves and the entire lobby. Apparently, they had mistaken the wording of "bear repellent" and had assumed it was to be used like mosquito repellent."