Does Vaping Show Up on Drug Tests? TrueTest Labs Squirrels are vaping now but it's not what it looks like. In cities like Philadelphia and London, they're chewing on discarded vapes, drawn in by the smell and ending up ingesting harmful NuEdge Cannabis smell shifts from full skunk to a hint of citrus : NPR Harris County DA Sean Teare's office has told local law enforcement his office cant accept simple possession charges for vape pens believed to contain THCciting limits in current lab testing and a Is Vaping Marijuana Safer Than Smoking?