The French love Dany Boon, though the condition hasn’t exactly been contagious. While the comic’s most successful venture, “Welcome to the Sticks,” spawned imitators in nearly every European market, the Gallic multi-talent hasn’t been the ingredient to catch on. His latest, “Superchondriac,” should pass quietly enough, except in France, where B.O. will prove nothing if not healthy. Boon plays a hyper-sensitive germophobe who disrupts everyone around him with his imaginary ailments — a low-concept setup that scarcely gives this laffer anywhere to go, relying on the actor’s charm and a series of goofy contrivances to limp its way home.

Romain Faubert (Boon) has the worst possible job for someone obsessed with everything that could possibly go wrong with his body: He takes photographs for an online medical dictionary, then spends his free time fretting about diseases most people don’t even know exist. We meet Romain en route to the hospital,...