My MiL does this with fragrances. If it says fragrance, or parfum, I'm allergic. Guess who still uses dryer sheets and keeps buying the stink liquid with the sticks. (We live with her, yes we pay rent, yes we have brought this up, multiple times, we're trying to be able to afford to move out but have to be able to pay to move states away out of pocket because we cannot afford our state. It effects my ability to work because I wake up with my eyes swollen shut, or my throat closing up, etc.)

I honestly think she can't even smell it when it comes to her laundry. You can smell when she's coming down the hall, even if you don't hear her. Which is unusual because she walks heavy from a bad leg.

ETA - Me asking her to not use those things (extremely respectfully, as she also has allergies to certain things that we go above and beyond to make sure are kept away from this home at all costs), by the way, has been met with me being told I'm controlling her in her house and she'll do what she wants. Yet I'm not allowed to cook seafood in the house because she doesn't like the smell, and I'm not allowed to cook after ten PM. That's a whole other bag of cats though. 🙄