Does Vape Juice Expire? How to Tell, Shelf Life, & Storage U.S. Vape? You should know even small amounts of liquid nicotine can be extremely hazardous to children and pets who swallow it or come into contact with it through their skin. What Happens If You Swallow a Zyn? Here's What to Expect Shocking Truth: What Really Happens When You Swallow Vape Juice? How to Properly Store E Liquids and Prevent Accidental Exposure of E Liquids to Children FDA