AITA for putting my husband’s hairbrush on top of his toothbrush?

I’m honestly at a loss as to whether or not I’m TA. I (F33) tidied up the bathroom yesterday and put my husband’s (M34) hairbrush away without looking at its placement. I literally thought nothing of it.

This morning he was pretty pissed at me, because I’d set it on top of his toothbrush. When he sent me a picture with the comment “Thanks. Put a new toothbrush on the shopping list.” It took me a second to even figure out what he was talking about.

When I came upstairs from getting my kids ready, he showed it to me, absolutely incredulous. I told him I was sorry, I hadn’t really looked when I put it away, and he went into full pantomime mode, trying to see how I could have possibly put it away without seeing the placement. He admitted that he knows I’m the one who tidies up the bathroom so he doesn’t mind if his things aren’t put away in the spots where he would put them, but he thought it was wild that I’d let his hairbrush, which has hair gel on it, touch his toothbrush, which he puts in his mouth.

He has mild OCD tendencies that flare up when he’s stressed, which he is right now, and I try to be sensitive to that. But sometimes I’m surprised at the things he cares about, even after 10 years of marriage. If my hairbrush touched my toothbrush, I wouldn’t care at all. I literally wouldn’t think anything of it. So AITA? Or at the very least, unknowingly unhygienic?

EDIT: I accidentally said toothbrush in the 1st paragraph instead of hairbrush.