Downplayed: Bob notices while the effects of the chemicals used were accurate the amounts used were slightly wrong, such as dissolving through a lock in ten minutes with a smaller amount that would really take twenty even on the lowest quality lock.
Justified: What made no sense, was cleverly disguised.
Lampshaded: "How did I miss that?" "You're a little slow on the uptake, Bob."
Invoked: The characters try to make the mistakes out of focus, so nobody notices them.
Exploited: The character does something that is not stated to not make sense, but the character does know through prior or future episode expressing his knowledge of its impossibility, with only The Show Must Go On backing up his actions.
The Plot Hole goes unaddressed until Alex has an epiphany that Candice wasn't entirely truthful.