This is a weird thing, I don't know where it came from. I somehow magically think that things are suddenly contaminated with something that could harm me. A few weeks back I thought my kettle had something in it that would poison me. It just pops into my head then stays there, I try to just ignore the thought as I know it's irrational. We don't use any particular chemicals, certainly not in any way that would get on the things I'm worried about.
Earlier for example, I used tea tree oil on my toe (it's infected) and then worried that somehow I swallowed some, or got some on my cup - I know it's hugely unlikely. I use it nearly everyday. It was nowhere near my cup, it doesn't exactly sprinkle all over the place, it's pretty contained and controlled. I don't know where the thought suddenly came from. Never had it before. Then I went to wash my cup properly, sponge, soap, the whole thing, rinsed really well in hot water as I was worried then that something from the sponge like the washing up liquid would stay in/on the cup. Made sure I rinsed it really well. Then I was worried my spoon wasn't fully clean. Even though I use it the same way, every day.
I just don't get where this suddenly came from.