A smoker's cough, meanwhile, tends to be 'phlegmy', rather ... Without knowing the purity of the vape you could be introducing harmful toxins into your airways.' E-cigs allow people to inhale ...

However, vaping caused Ewan to cough up bile and choke in his sleep ... He was told that his lungs reacted to the chemicals in the vape liquid. Ewan says that vaping nearly took his livelihood ...