Dr Smith is an ARC Future Fellow, and Professor (Associate) at the ANU. She was an ARC Postdoctoral Fellow then Research Fellow at the Australian Centre for Economic Research on Health (ANU College of Medicine, Biology and Environment) from 2004.
Dr Smith was awarded ARC ‘Discovery’ and ‘Linkage’ funding for projects on the economics of breastfeeding and markets in mothers milk, surveying maternal time use and breastfeeding support in workplaces and childcare. She has been a chief investigator on an NHMRC quit smoking randomised controlled trial. She has published over thirty articles in health, nutrition and economics journals, as well as two books (Taxing Popularity and Gambling Taxation in Australia) and several book chapters. Her current research focusses on the economics of breastfeeding and regulation of markets in mothers' milk.
Dr Smith has been an expert advisor on economic aspects of breastfeeding to the WHO and the US Department of Health and Human Services, and led a consultancy for WHO on marketing of commercial complementary foods for infants and young children. Her invited expertise has contributed to several parliamentary inquiries on breastfeeding, tax expenditures reporting, and tax policy. She has served as an honorary tax policy advisor to ACOSS since 1999, and as honorary national treasurer of the ABA from 2002-2007. She was an editorial board member for the International Breastfeeding Journal, ILCA research commitee, and advisor for the International Baby Food Action Network and World Alliance for Breastfeeding Action.