Importantly, even if one assumes the unlikely scenario wherein the CE4 device produced all dry-puffs at 7.3 W in every experiment (Table 1) in the current study, thereby inflating the levels of HCHO and 1a-d under conditions averse to users, the results of the replication study 4 show that a concerning percentage (12%) of human subjects could not detect dry puffs under conditions affording levels of formaldehyde that are above the OSHA threshold
E., Spyrou, A., Tsimopoulou, K., Stefopoulos, C., Romagna, G., & Voudris, V
Users simply place a pouch under their lip, allowing nicotine to absorb naturally
After all, Roehr and Lundahl were only able to do the study they did because Lundahl is one of a small handful of researchers licensed by the government to administer marijuana during studies