Smokers inhale more tar, nicotine and carbon monoxide when measured with WHO method RIVM has measured the amount of tar, nicotine and carbon monoxide (TNCO) in all filter cigarettes sold in the Netherlands with the WHO Intense method.
Harmful substances in e-cigarettes assessed While e-cigarettes are less harmful to health than tobacco cigarettes, the vapour from an e-cigarette contains substances and chemical impurities in concentrations that could be detrimental to heal