STAMFORD — Winds are gusting and snow has blanketed the region, but that has not stopped businesses from opening and residents from venturing outdoors into the season’s biggest snowstorm to date. “The plough trucks should be coming around soon,” said Nick Aivalis, who owns the building at 1410 Summer St. He was also shoveling, helped by a man who had just dug out a car on First Street. A few blocks south on Bedford Street, Eric Goodman pushed Kai, his infant son, through snow drifts nearly a foot high. Kai was wrapped tight under layers of blankets in a three-wheel stroller with sunglasses covering his face.