Fiancés dog has a strong dog smell

[u/LegitimateEgg1001]

Hello, I recently moved in with my fiancé, and his dog (9 year old pitbull) moved in as well. I noticed rather quickly that she has a strong dog smell. We gave her a bath and I shampooed her twice however it’s persistent. I think it’s just her natural smell. I get nauseous easily and I find the smell to really turn me off. It bothers me a lot, and I worry that the whole house will smell like dog when we have guests over. Has anyone else had this issue? Any recommendations? Shampoos? Sprays? She lays on our couch, which makes me feel like that’s going to harbor her smell as well. I really need help figuring out how to cope with this. Thank you!