The Arsenal hero and long-time Sky Sports co-commentator, who was also one of the voices of the FIFA video game franchise for a decade, quickly went viral ahead of Manchester United vs West Ham.
Taking to the Old Trafford pitch, Smith was discussing the Hammers' midfield when the sprinklers went off, absolutely drenching him.
However, to much amusement, the 61-year-old didn't skip a beat, continuing his punditry as if nothing had happened.
Stepping in to save his colleague once he'd finished his point, Ben Ransom said: "I'm going to end it there, because this is absolutely brilliant.
"I've never seen a more consummate professional than Alan Smith. It's a two o'clock kick-off here, so we're going to go and get a towel and dry off."
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The Arsenal legend then grinned as he wiped his face, before a few hours of sitting in a chilly commentary box in Manchester.
Smith has one of the most distinctive and recognisable voices in commentary after a glittering playing career.
A former striker, the Birmingham-born star netted 84 goals in 217 games for Leicster before registering 115 in 347 games for Arsenal.
A two-time league champion with the Gunners, he also has 13 England caps to his name.