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The vapour that is produced when you draw or inhale through the cartridge can be seen when you exhale, which looks just like regular smoke

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[8] Thanks Ingesting far too much nicotine results in acute nicotine poisoning, which is characterized by stomach aches, difficulty breathing, confusion, vomiting, headache, and loss of consciousness

Impact on the Environment Notably, e-cigarettes do not produce smoke per se, but vapor, which has raised concerns and questions about its impact on the air quality and whether it poses health risks similar to those of secondhand smoke