A too-high float level or a flooding condition will allow fuel to spill out of the venturi onto the throttle plates, and leak out of the throttle shaft bushings, but once it reaches the proper level on shutdown the leak will stop. What's left in the float bowl will take several days to evaporate.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!