laundry help lol

cl

so a dress of mine got mixed up in my boyfriend's laundry about 6 months ago, and he uses this super strong detergent that has a distinctive smell. it smells like him and his whole house. not that it smells bad, but we've since broken up, and i can not make this dress smell like anything other than him. i've worn it and washed it twice, and it smells the same. any ideas about what i could wash it with to get the smell out?