Just vacuum the carpet, it should suffice. Some people put perfume in the room to hide other scents (or even a drop on the rabbit so that they won't smell anything else - I never tried so I can't tell if it works, I would not bother unless the first attempts to bond are unsuccessful). I suggest bonding in the bathroom if you can - the best places are small, without any places where one of the rabbit could hide or get cornered, not a place where your rabbit goes usually, and the plus of the bathroom is that the floor is often made of tiles (most rabbits are not comfortable on a kinda cold / slippery floor and it will distract them from a potential fight). If you've read about it, you should know that some vegetables your rabbit really likes will help the date along (what's a date with no dinner? XD). Then, if the rabbits seem to go along well (sniffing / grooming each other), the best thing is to put them together in a pet carrier (or a cardboard box or something) and to release them at the same time in the space they will be living in so that they understand that it's a shared space. Once it's done, check there is no place where one of the rabbit can corner the other, keep an eye on them and that's all there is to it. Honestly, with a male / female neutered couple, the male being the host, your odds are pretty good (males tend to be pretty welcoming when their new roomate is female). Unless if one of your rabbits is a sociopath or a pathological loner who hates other rabbits, it shouldn't be too hard. Personally, I've done the bonding process twice and I thought the hardest part was staying relaxed and stopping myself from intervening when the fur was flying a bit. As long as there is no blood, a bit of a scuffle and some mounting is fine even if it can take more or less time depending on the rabbits. My current pair had trouble establishing the hierarchy and it took several weeks. The first time I bonded rabbits, I was petrified for my female who was a tiny nethie and she pummeled the male who was easily twice her size in 20 seconds - he submitted, signed for a lifetime of grooming her whenever she wanted, and it was over.