Gain detergent has partnered with Dr. Alan Hirsch of the Smell & Taste Treatment and Research Foundation to show consumers the positive impact that smelling good can have in their lives.      “At Gain we understand that Hispanic consumers have very specific scents preferences and, with that in mind, we want to offer them a fun and happier laundry experience with pleasant scents they enjoy,” said Hamilton Brown, brand manager. “My studies have shown that fresh-smelling clothes induce peopl...