Cinnamon, apple, unicorn milk - their names sound innocuous, but a respiratory specialist is warning of the dangerous toxins lurking in e-cigarettes. Dr Stuart Jones, the medical director of the Asthma and Respiratory Foundation, had cast doubt on claims relating to the harm they could cause relative to other cigarettes. Dr Jones said the science around vaping has developed dramatically in the last couple of years and there were a number of animal and human studies demonstrating the harm which vaping could cause.