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.
Improvement of air quality continues In 2019, the calculated concentrations of nitrogen dioxide (NO2) and particulate matter (PM10) were below the European limit values in almost the whole of the Netherlands. Locally, the limit value for nitrogen dioxide is still being exceeded.