If swallowed, they can be poisonous, often causing nausea, sweating, dizziness and tremors, according to the National Capital Poison Center
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This condition is called EVALI or E-cigarette or vaping product use-associated lung injury
PMID 22740748
Here is an odd one!Very well made, but apparently not ever in wide distribution, as we have never seen this before.This particular trick was purchased in the 1970s from Ron Allesi, a vintage magic dealer.So it was old then!We were not able to locate any of these currently for sale on the Internet
Remarkably, EC use led to pathogen overrepresentation, increased virulence, and a strong pro-inflammatory response in the oral cavity, comparable to severe periodontitis