interesting, looks to be a few patents for...

interesting, looks to be a few patents for this:



https://patentscope.wipo.int/search/en/detail.jsf?docId=US73215293

US20110089255 - IN-VEHICLE SMELL NOTIFICATION SYSTEM

Abstract
An in-vehicle smell notification system including a vehicle operating computer. A detector is operably connected with the vehicle operating computer and adapted to identify multiple external stimuli. A scent emitter includes multiple scent reservoirs. A controller is operably connected with the detector and the scent emitter and adapted to identify each of the multiple external stimuli and release a predetermined scent from the scent emitter upon identification of a predetermined stimulus.

https://patentscope.wipo.int/search/en/detail.jsf?docId=US292563838

US20200111189 - TRANSPORTATION SYSTEM USING ODOR PREFERENCES

Abstract
A system includes a computer remote from a vehicle. The computer is programmed to store a label of an odor associated with a user, instruct the vehicle to pick up the user, receive data from an environmental sensor in the vehicle, and output a message upon determining that the data indicate that a level of the odor exceeds a threshold.

https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2019074526

WO2019074526 - IDENTIFYING AND MITIGATING VEHICLE ODORS

Abstract
A method for mitigating odor includes detecting a known smell using on one or more odor sensors in a vehicle. The method includes determining whether the known smell is agreeable to one or more passengers of the vehicle. The method includes mitigating the known smell using one or more odor control devices if the known smell is not agreeable to the one or more passengers of the vehicle.