The steamy air during arrivals for “The Smurfs” at the Ziegfeld on Sunday afternoon led to fears that three actors in padded Smurf costumes could suffer heat exhaustion. They were forced to leave the red carpet in between taking photos with Neil Patrick Harris, Sofia Vergara, Hank Azaria and Katy Perry, and wobbled as the temperature hit 91. “They were stumbling around like little drunk Smurfs,” a spy quipped. A Sony Pictures rep reassured us, “We were careful to keep them primarily in an air-conditioned area, and made sure they were properly hydrated, fed and given breaks.”