1999 Honda Passport fuel smell and high idle

IT sounds like there is too much fuel being commanded into the engine. My guess is that if you pulled out the dipstick indicator for the engine oil that the oil will be thin and smelling like raw fuel, possibly the level may be higher as well. Excess fuel can make its way into the engine oil crankcase. Not good. IF so get the oil changed and the problem solved to cause this condition.

I would start by checking the computer for codes that may reveal a direction to go in. Possbly the fuel pressure regulator is allowing too much or the is a vacuum leak that is causing the idle to shoot high.
If you get the codes, post them.

Sometimes a vacuum leak can be uncovered by hearing a hissing or whistling sound in the engine compartment while the motor is running. IT can also be flushed out by spraying carb cleaner at suspected areas and seeing of the cleaner get sucked into the engine and changes the idle when that spot gets hit.

You may have an intake manifold gasket leak where the manifold bolts to the head. The gaskets are made of plastic and coated with gasket paper. What happens is that the plastic gasket cracks around the center ports. Other ways besides listening for idle change is to hook up a scan tool and watch your upstream O2 sensor respond as you spray under the manifold with carb spray. Or you can listen by sliding a hose under the manifold and holding it to your ear. OR you can use a smoke machine. If the condition is really bad, you'll get an O2 sensor code indicating either a lean condition or the O2 not switching due to insufficient fuel delivery.