Good morning, I am wanting to change my bathroom around and need a little advice on some exposed toilet waste pipe that I would like to remove if possible. The toilet as it stands is not above where the pipework dissapears into the floor (about 3' away) and is attached by a length of pipe work with some sort of vent in it (polypipe spv42). I would like to move the toilet and remove this pipework as not only is it unsightly but the vent smells. Can anyone please tell me why this vent is there. The toilet is approx 4m from the rear wall of the house where the soil stack is located. Thanks