People with a keener sense of smell find sex more pleasant and, if they are female, have more orgasms during sex

Scent plays an often under-appreciated role in sexual attraction, helping to account for why visual attractiveness alone can’t explain just how physically attractive a person is perceived to be. But what role does our ability to smell our partners – or potential partners – play in actual experience? We know from past research that men born without the ability to smell tend to have fewer sexual partners. And about half of people who lose their sense of smell, through infection or injury, report negative impacts on their sexual behaviour.

https://digest.bps.org.uk