Setting up clear rules and expectations with a roommate from the beginning can help. And if they break those rules repeatedly, finding a way to resolve it before things is best.
Has trust been damaged beyond repair? If so, continuing to live together with your roommate may cause more conflict. Can they respect boundaries going forward?
If they don’t, the issue will likely continue. Is moving out an option? If your name is on the lease, you may be able to ask them to leave. If you’re both on it, discuss who should move. Sometimes, ending the roommate arrangement is the best long-term solution when trust is broken.
All allergies, of any kind, should be respected. However, there are also similar stories where this daughter-in-law didn’t respect someone else’s allergy.

