It's always interesting, if not a little nauseating sometimes in terms of the medical detail, to listen to Dr Shane Reti talking about this bill, which he has very strong views on and a long association with trying to stop this happening and to bring regulation in that would ban it. He talked about third-hand smoking, which is, of course, another horror story. If you get into a cab or an Uber vehicle, the upholstery contains amounts of traces of smoke and the residue lasts, he was telling us, for many years.