chemicals in vape juice Archives PUBLIC HEALTH INSIDER Vape juice contains a long list of chemicals, many of which aren't even listed on the packaging. Testing has also shown that vapes labelled "nicotine free" can have high nicotine levels. Chemicals in e cigarettes may put users at risk Diacetyl in Vape Juice: The Facts We Know Pod Salt UK Vaping lung illness: Harmful chemicals found in e cig flavoring juice