When I see fake iPhone conversations

Its some sort of stinky particles to air ratio machine, called a nasal ranger. As far as i know it mainly used in colorado to monitor the pot smell.
http://www.nasalranger.com/
http://gizmodo.com/nasal-ranger-smelloscope-will-save-denver-from-stinky-1464506344

No no, but it looks like it though. ^

He's being really thorough about it.