What Happens If My Vape is Dropped in Water? Will a Dropped Vape in Water Explode? Insights E cigarette burns and explosions: How common are vape pen injuries? Leaving your vape in a hot car, freezing conditions, or damp places can damage the battery increasing fire risk. Keep it somewhere safe. Don't use swollen or damaged Don't flush it. Don't toss it. **Never dispose of vapes in the toilet or trash!** Vapes can leak toxic chemicals and may even explode, putting people and the environment at risk.