This community is dedicated to pictures of boobs and those are (rather nice) boobs. There's no options for blocking pictures based on any criteria.
Nobody is forcing you to have preferences, but it's like anything else in the world. Your only option if you see boobs you don't like is scrolling past them.
If you are allergic, and want to seek treatment ... you don't need to share details with the doctor. Tell them about other symptoms, like skin irritation, headaches after orgasm, etc.