What happens if you swallow the vape smoke? Vaping: why e cigarettes may be more dangerous than we realized Vox Vaping: Friend or foe? :: KPWHRI Even if you dont inhale while vape smoking, your mouth, throat, and lips are exposed to harmful chemicals, as is your oesophagus when you swallow saliva that contains the chemicals. , There is a If you vape, you inhale a lot of harmful substances. These can damage your heart and lungs. ACT Not only is vape smoke full of harmful chemicals, if vape liquids with nicotine in them are swallowed, it can cause death. If someone you know has swallowed vape liquid