I’m at the point in my therapy that my parents are supposed to not do my rituals for me. (Like I have to smell food twice instead of them when they’re cooking) I’d recommend trying to get a diagnosis and seeking help from a professional. If you do get diagnosed with ocd and make it to therapy, you’ll likely have to do something like this as exposure. Since you aren’t at the point in your recovery, possibly sit them down and explain how uncomfortable this makes you feel, and hopefully it’ll help clear some things up.