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.
RIVM investigates dangers of e-cigarette At the request of State Secretary Martin van Rijn (VWS), RIVM is carrying out an investigation into the safety of e-cigarettes.