house smell is the smell that of a guy or girl without perfume or cologne. It is usually the smell of the laundry detergent on their clothes. Many people enjoy house smell on a person, especially when you're being hugged by them. It makes you feel safe and comfortable. Sometimes you can just imagine house smell.
exp. "damn, Ian was hugging me yesterday and I just couldn't get enough of his house smell."
exp. "Those girls over there didn't seem to like my house smell all too much"