Diagnostic systems and methods of vehicles using olfaction

A method comprising:

• at least one of:
• measuring an amount of particulate within a passenger cabin of a vehicle;
• and
• measuring an amount of a volatile organic compounds (VOCs) within the passenger cabin of the vehicle;
• and
• based on at least one of the amount of particulate and the amount of VOCs within the passenger cabin of the vehicle, diagnosing at least one of:
• a characteristic of the vehicle;
• presence of a chemical in the passenger cabin of the vehicle;
• occurrence of an event within the passenger cabin of the vehicle;
• and
• a remaining life of engine oil of the vehicle,
• wherein the diagnosing includes, based on the at least one of the amount of particulate and the amount of VOCs within the passenger cabin of the vehicle, diagnosing a characteristic of the vehicle, and
• wherein the characteristic includes at least one of:
• a fault of a catalytic converter;
• engine coolant leak;
• an engine oil leak;
• rubbing of a belt or a hose;
• overheating of a clutch;
• a fault associated with one or more brakes;
• and
• overloading of the vehicle.

A vehicle system, comprising:

• at least one of:
• a particulate matter sensor configured to measure an amount of particulate within a passenger cabin of a vehicle;
• and
• a volatile organic compounds (VOC) sensor configured to measure an amount of VOCs within the passenger cabin of the vehicle;
• and
• a control module configured to, based on at least one of the amount of particulate and the amount of VOCs within the passenger cabin of the vehicle, diagnose a characteristic of the vehicle,
• wherein the characteristic includes a fault in a battery of the vehicle.