I love this thread!

I have a fetish for farts and and ass sniffing, including underwear of course.
This is my first post and I'm sorry if the text is too long... I hope you like my real experience of underwear / fart sniffing
I will tell you the only experience I had related with ass and underwear sniffing. I still jerk off today many times when I think in this experience...
About 10 years go, when I had 16 years old, I had a very hot straight friend that was like a brother for me.
He was soccer player blond hair, almost without hairs and with a firm and very hot round bubble butt.
It was common that we go to each house to stay and play during weekends.
We had confidence and it was very common to hear and smell each other farts when we where seated on the room playing video games.
He drinked lots of soda at that time meaning very powerful farts

It was with him that I learned my fetish for ass/underwear and farts sniffing.
At very early I was noticing that each time he farted I was getting bonner and trying to sniff his farts, getting closer to him while playing games in the PC.
Actually, I still remember the smell of his farts: strong shitty smell which I loved!! (actually I prefer his farts smell thanmy own...)
Sometimes while he leave the room I took oportunity to sniff the fabric of his chair seat and the smell was wonderful... An impregenated smell of farts/shit. Hum, it was so good...
On other occasions it was me going to his bathroom where I had the chance to go to the laundry basket secretly and pick his tight boxer briefs to sniff the ass area...
The zone where his ass hole was touching the underwear was superb!
Sometimes a skidmark was there (but small because I discovered that his shit was always hard as rock leaving his ass/underwear almost always clean)
The smell of his underwear on the ass zone was very good, smelling a mix of shit, farts and sweat...
I discovered also that sometimes his jeans and pijamas on the laundry basket had also a bit of shitty smell on the location where his underwear and ass hole was touching!
Actually I'm already with a bonner just because of remembering these experiences again.
One day we where alone playing in pijamas with eachother in his room (some kind of wrestling) and at some point he was laied down in his bed with his ass streched in a doggy type position.
I saw his big, round and hot ass and, without thinking I start sniffing about 1..2 inches from his ass (through pijama and underwear).
Even without touching his pijama/underwear it was possible to sniff a fart/shitty smell from that zone

It was a very fast and unconscious action, a few seconds enought for some sniffs.
The interesting part is that he noticed that I was sniffing when I heards him saying/laughing: "Are you sniffing my butt??"
At that point I was with an huge bonner a nervous because he noticed that I was trying to sniff his ass...
Since our friendship was very strong (without any sexual interaction) I replied also laughting: "I was just trying to check if you farted."

He continued laughing and says: "No but I can fart if you want. Do you want that I fart on your face?"
I was now in an ecstasy mode with a big bonner and I said: "Yes, try to fart but a small one so that I do not die here." (of course I was in heaven wanting for farts but this was my answer considering that situation where I was very nervous).
After "giving him permission" to fart I reduced my nose distance to his pijama and underwear covering his hot ass while he was still in the doggy position.
I started sniffing and the smell was now very strong and so good...
It was a kind of shitty smell between meat and rotten eggs.
And, after a few moments I heard a bassy and strong "pfrrrt" sound.
Actually I was so close to his ass (my nose almost touching his pijama) that I felt the vibration!!
The warm air escaped and I was in heaven with the smell. It was one of the best smells I felt in my life. Strong fart/shitty smell...
To be honest I don't remember what I said after sniffing his fart but we all laught and I probably said something like "your farts are powerfull". (of course after this I went to the bathroom alone to jerk off instantiatly

)
Some weeks later we repeated the farts sniffing part while playing video games dressed with pijama on his room with each one seated in a chair.
He probably noticed that I liked the smell of his farts and at some point he said: "I think I need to release a fart. Do you want to sniff it?"
My response was something like: "Yes, let's see what will be the smell" while both of us were laughing.
Again I was there with an huge bonner... He got up from his chair pointing his ass to my face. I put my nose almost touching his pijama/underwear and the smell was very good. (again the fart/shitty smell like last time) - similar to the picture in this post
He released what was probably the biggest fart I sniffed in my life!!
Due to his round, big and hairless ass the sound was very bass, powerful and I felt the vibrations! (Oh, I'm again with an huge bonner hust by thinking on this...)
And what about the smell... It was so strong! It was a blast of shitty smell around my face!
We both laught a lot and he seated again to continue playing the video game.
And I took the oportunity to go to the bathroom and do my thing
Well, to keep this post not to long, we basically continued during multiple occasions repating this "game" of me sniffing his farts.
We were so good friends that it was pure male bonding for him...
Before finalizing, there is another very nice aspect from him: the characteristics of his shit (sorry if you are not into shit/scat stuff).
Along time I learned that his routine was always an average shit every two days (I know, I was crasy trying to put on my brain those things).
Usually he want to take a shit at night, precisely when we were together playing video games or watching TV. (explainig a lot the shitty smell of his farts!)
At some point he was so confident with me in his room that we where at PC together (one each in a gaming type chair) and I noticed him changing his position in his chair to a doggy style position with his ass up in the air...
I saw him also making some strange faces while playing...
I then asked laughing: "Are you about to release a fart?"
He then replied: "No, I need to take a shit... I'm already squeezing a turd against my underwear".
I said laughing: "Oh, so that means you don't have more farts today..."
He said: "I really need to go to shit..."
We still have been playing a bit more until we pause the game and he went to the bathroom to take a shit.
Well, this post is very long already.
I still have some more real experiences with this mate that I can write here if you are interested (namely how I know that his shit is rock solid leaving the underwear clean, even when a turd is squeezed againt it

).
Long store short, time flies and after many year together we split to different contries and we lost almost contact... I still exchange messages with him but is not the same thing
I hope that you like my description and I please post more real experiences also. I love ass / fart sniffing stories a lot
