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.
More than health risks play a role in compliance with coronavirus measures The risk of COVID-19 is not the only factor that determines compliance with the coronavirus measures; other risks also play a role.