To go full schizo conspiracy theory: It may also not be a coincidence. There may be someone that dislikes that one Carol, knows she has schizophrenia and a smart fridge. They design this ad, or perhaps just plant the idea of it at the company they are working for with the intention of harming her.
If there really was a Carol I think police should look into this theory just to rule it out.
Nope, for the simple and trivial to check reason that it's not just an ad, or even just a whole ad campaign. It's the name of a protagonist of a drama, that the ad promotes, using a phrase that is said to that fictional character.
If there really was a Carol I think police should look into this theory just to rule it out.