Ursula: "What? They're in the package. They're sterile."
James: "We have no way of knowing that."
Ursula: "Look, just because a mouse will someday be in it, doesn't mean that it is retroactively germy."
James: "Well...yeah...but we still don't put our lips on it..."
Ursula: "Mwwah!" (plants one on the newly opened package of mousetraps.)*
James: ".....I'm going to go dial 9-1-1 now..."
* Livetraps. I wouldn't kiss anything with springs.