What is it about guys smelling or sniffing dirty unwashed panties of ladies?, I still don get why they do this, I caught my boy friend smelling?

[Being_a_good_Indian]

Underwear fetishism is a sexual fetishism relating to undergarments, and refers to preoccupation with the sexual excitement of certain types of underwear, including panties, stockings, pantyhose, bras, or other items. Some people can experience sexual excitement from wearing, while others get their excitement when observing, handling, or smelling the underwear worn by another, or watching somebody putting underwear on or taking it off.

Underwear fetishism is not considered as paraphilia unless it causes distress or serious problems for the person or those associated with them.

One of the most common types of panty fetishes involves used panties. In this fetish, panties or other intimate clothing that have previously been worn are eroticized.

In fact In Japan, this industry has a long-established brick-and-mortar presence, known as burusera shops. They sell panties worn by females and many males pay to buy those panties. Just to sniff. It seems ridiculous but it's true that few people have such fantasy.

[Anonymous]

It’s called pheromones.
It’s the same reason women love their boyfriends sweaters or something that smells like him.

Your genital perfume gives us a buzz all the way to our penis. Just like a dog smells another dogs ass... it gives us the essence of your most sexual area.

[Craycrayhay]

Your next question might explain it

[Tellme]

I don’t know. I don’t do this.

[Twalli]

It's because they smell like you.