Kind of like a Google Home or Amazon Echo but instead of being triggered by something like "Hey Google" or "Alexa" it's triggered by sneezes. It's whole purpose would be to say things like "bless you" or whatever the regional response is to a sneeze
Of course it would have to be connected to the internet so that we can sell sneeze analytics to Amazon for targeted advertising.
Bless you / gesundheit originally was said to quickly bless the person so that the "demon" that had just escaped from the body (producing the sneeze, obviously, bc what other explanation could it possibly be!?:-P) could be prevented from re-entry. Maybe also from going into another nearby human?
So I think it would be funny if the AI would say rather something like (in Doom computer voice) "Demonic activity detected. Species analyzed: 99% probability of [succubus] presence. Deploying automated countermeasures. Further recommendation: deploy nuclear arsenal from orbit to eliminate all possibility of contagion spreading."