1 yr old mini- schnauzer... Scared after listening to construction next door refuses to eat favorite meals... Any kind of meal. Dog food, boiled chicken or rice, snacks... And proceeds to vomit the little intake he had during the day. Occurrence for the past 24 hrs.

Being frightened sounds like a symptom, not a cause. He needs an emergency vet clinic. NOW

Schnauzers are magnets for pancreatitis. Time for the vet.