Philip Morris's heating tobacco system IQOS Vaping shows comparable DNA damage in oral cells to smoking Le cigarettier Philip Morris investit pour un monde sans fume, mais pas sans tabac. Enqute sur l'IQOS, le produit phare de la multinationale. Mise au point Facebook Vaping has become common, but it's important to know what you're inhaling. Many e cigarettes contain nicotine, heavy metals like nickel and lead, and chemicals that can harm your lungs and overall health.