Olfactophilia

Sexual pleasure based on fragrances, especially those released from the human body, is a paraphilia known as olfactophilia. When the odour originates from a sexual location, the arousal is usually more substantial.

More About Olfactophilia

A bodily odour or an odour expelled from the body may cause the arousal. Sweat and odours associated with personal hygiene might be considered body odours. The body's smells, including those caused by flatulence, arouse others.