While searching for something else I stumbled upon this article and the mention of salicylate sensitivity (it is the main ingredient in aspirin but is in a lot of other food). Apparently coconut oil and olive oil are very high. The list of possible symptoms is quite extensive
http://salicylatesensitivity.com/about/food-guide/fats-oils/
https://www.westonaprice.org/health-topics/vegetarianism-and-plant-foods/plants-bite-back/