AITA for asking my fiancée to cover up her feminine products

Posted from a burner account, as my fiancée is an occasional reddit user.

I (32 year old man) have been living with my fiancée (27 year old woman) for the better part of a year. Overall, cohabitating has gone incredibly well. We’re both meticulous with our chores, and we generally communicate better than most couples that we know. However, we’ve lately had a disagreement that’s difficult to settle. My fiancée leaves her used period products at the top of open trashcans in bathrooms that guests use, and she does not like that I ask her to cover the discarded products.

I am not generally grossed out by the menstrual cycle or by blood. I worked in healthcare for most of my 20s, I’ll pick up pads or tampons for my fiancée without feeling awkward, and this may be TMI, but I’m not opposed to period sex. It just doesn’t phase me. However, neither I nor our occasional guests should expect to see blood-soaked tampons complete with clots every time that we use the bathroom. It’s jarring, seeing the bloody scene in an otherwise clean bathroom without warning. I’ve tried to come up with minimally invasive solutions, such as my fiancée wrapping her products in toilet paper before discarding them (as past partners have done), or even purchasing a closed-top trashcan. My fiancée firmly rejects both of these plans, saying that, if she has to go through the monthly ordeal, I (and by extension our guests) shouldn’t get to complain about having to see the aftermath. I’m sympathetic to her experiences, but at the same time, her response feels retributive.

On one recent occasion, when guests were coming over for a game night, I pulled some extra toilet paper and gently laid it on top of the trash, covering the bloody products before they arrived. My fiancée noticed this, and confronted me after the guests left, accusing me of being ashamed of her and of going against what we had previously discussed. Taking a step back: this shows that she is intentional about the visible products, enough so that she checked to see if they were still in place. At this point, it feels spiteful.

AITA? What would you folks suggest that I do in this situation? Even an intervention that requires no effort on her part, the closed-top trashcan, was rejected with prejudice. I love my fiancée, but what could have been a small discussion is becoming a mountain of conflict.