The vaporized molecules bind with a specific set of olfactory receptors, triggering a signal in your brain that you interpret as smelling a particular odor
However, recent studies revealed that HTPs contain unknown chemicals not found in CCs 20 , and even some harmful and potentially harmful chemicals (HPHCs), including propylene glycol, acetol, glycidol, and 2-propen-1-ol are significantly higher in HTPs than in CCs 9,11
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But those designs, he adds, "dont have to be in the public space, they dont have to be in our billboards and our stores, and they certainly dont have to be in the hands of our children." Follow topics and authors from this story to see more like this in your personalized homepage feed and to receive email updates.