Steam coming from 2000 Honda Accord 4cyl engine bay?

When I got home after a drive around town today, I noticed a slight scent coming from my air vents (AC was NOT being used). After parking, I discovered a light but noticeably steam was coming out of the grill/hood area, checked the engine but could not find an apparent source. Looked underneath the car, and the steam appeared to be emitting from the portion of the exhaust underneath the engine, suggesting fluids leaking onto the exhaust? Fluid/coolant levels are all normal, engine temp gage is reading normally, and there are no other symptoms. Drove again and couldn't replicate the issue. Any thoughts?
Added (1). Scent didn't match up with descriptions of failed heater core smells, and there aren't really any other telltale heater core failure symptoms

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