If you are smelling it, better pull the cover off the air filter box and inspect there first thing, if it smells strong, or is wet DO NOT PRESS THE STARTER BUTTON...
remove the tanks, and pull the spark plugs, move the bike OUTDOORS.
with the plugs removed, cover the valve cover with a towel, have rags handy, and a fire extinguisher at hand wouldn't hurt.
Carefully crank the engine over to expel the fuel from the cylinders. Use caution, it will be expelled forcefully, and usually in a very messy and profuse quantity.
clean everything up before re-assembly.
oh, put the fuel valve back to Run.