For me it is the fact that our blood contains iron. I earlier used to believe the word stood for some ‘organic element’ since I couldn’t accept we had metal flowing through our supposed carbon-based bodies, till I realized that is where the taste and smell of blood comes from.
What about if you think off it like Teflon on a nonstick pan?
I use a ceramic pan mostly and try to stay away from nonstick and teflon because that can scratch over time and get into food.
I also have an issue with rinsing out dishes. I’m worried there is still going to be soap so I just rinse things over and over.