What makes you attractive to others

Fertility:
Fertility can affect how women’s voices sound too.

Hormones:
Women smell better to men when they have high estrogen and low progesterone levels (indicating high fertility).

Hormonal balance:
Our hormonal balances may play a bigger role than we think in who we become attracted to.

Quality time:
Attraction is generally increased by spending a lot of time with someone and physical touch (when it is welcome, of course) also tends to speed up the process.

Testosterone increases libido: While we tend to associate testosterone with men and estrogen with women, they both play a role in all genders and testosterone increases libido for everyone.

Importance of kissing: In general though, humans don’t have the strongest sense of smell, so kissing means a lot from a psychological point of view. 

Smells:
Not only are we attracted to other people’s smells on an individual basis, but some people’s smells are more attractive than others in general, too.

Men with low voices:
Just before women start ovulating, they are more attracted to men with lower voices.

Diet:
It’s been shown that men who have a diet high in fresh produce smell more attractive to women.

Ovulation:
When women are ovulating, they are generally more attracted to men with wider jaws.

Immune systems:
We are attracted to people who have different immune responses to us and kissing allows us to get a sense of this. 

Health:
If people are healthy, they will generally smell better too.