What should we do

My boyfriend spokes weed medically and he turned one of the rooms in the house into his weed room. It honestly looks like a damn dispenserary in there. I'm 23 weeks pregnant with our first baby and we were gonna use the other room in the house for a nursery, but it's a bit father from our bedroom. My boyfriends weed room is right across our bedroom. I asked him of we could turn his weed room into a nursery and he can move it to the other room. He's a bit annoyed because he thinks that will be a shit ton of work but he also says it will be hell trying to get 3 years of weed smell out of room. I didn't even think about that. I don't want the baby in that room if we can't get the weed smell out. He said he can try but no promises. It's been 3 years of smoking, dabbing, and hot boxing that room. Should we just stick with the original room as the nursery?