With the spraying in addition to the heat, one does get dizzy and with the urge to vomit
The exclusion criteria included the use of other forms of tobacco, dual users (current, simultaneous use of conventional cigarettes and HTPs products), history of alcohol consumption, participants with a history of upper respiratory infections within the past three weeks, sinonasal disorders (nasal polyps, chronic rhinosinusitis, allergic rhinitis, severe septum deviation), a history of exposure to respiratory toxins other than cigarettes, malignancy, head trauma, neurologic, endocrine, and psychiatric disorders
doi:10.2307/3679392
a and b are photos of potted plants in ambient light and in the dark, respectively, captured on Sony Alpha ILCE-7M3 camera