Mouth to Lung (MTL) Vs Direct Lung (DL) Inhale Explained E Cigarette Direct Vaping is not for children and it's not risk free. The long term effects are not known and some vapes can contain dangerous materials that affect children's central nervous systems and brain development, We're inviting Deakin students to share their thoughts and experiences in a short survey about vaping. The survey takes around five minutes to complete and is open to all Deakin students, regardless Vaping myths and the facts Better Health NHS