8 Vape Juice Ingredients to Avoid Toxic e Liquid Flavors Cannot read properties of null (reading 'add') 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. Community Request Diacetyl Center for Research on Ingredient Safety Which brands contain diacetyl in their vape juice? Knowledge Kaiweili Digital Technology Popcorn Lung: The Deadly Secret in Your Vape! Did you know that the sweet, tempting flavor in your e liquid could be hiding a chemical called Diacetyl? This chemical, which tastes