5. Smell
The one thing that is a turn-off for both men and women is the bad smell. No matter how good you look and how terrific your attributes are, if you happen to have a bad body odor or your breath smells, then you can kiss your first impression goodbye. Always brush your teeth properly, apply deodorant when leaving the house and make sure you wear a clean pair of socks every day to avoid the buildup of smell in the feet.