As if there wasn't enough to worry about already, squirrels are now vaping in various major cities across the globe. Wildlife experts warn that this behavior could pose serious danger to the Understanding Vaping: Can It Cause Sickness? Understanding Vaping: Can It Cause Sickness? As if there wasn't enough to worry about already, squirrels are now vaping in various major cities across the globe. Wildlife experts warn that this behavior could pose serious danger to the