After driving car smells hot as if it overheated, but never has.

Hello, You likely have a small oil leak on the valve cover, or another place that is leaking on the exhaust. Also, if the smell is sweet, like antifeeze, you may have a small coolant leak as well. Lastly, check smell the wheels to see if the brakes are the source of the smell. They very well may be getting low on pad, and getting hotter than they were 5 or 10k miles ago.

Don't rely on the gauges 100%, open the hood and verify that the coolant is full, both in the overflow reservoir and the radiator--ONLY check the radiator after its completely cooled down.