No need to be sorry!
Thanks for filling me in more. Again, terms like "fetish" are things younger people use really casually these days, but sexology terms tend to have very specific meanings, and a fetish is a similar term to those that end in -philia. Fetishes and philias are things people with them usually *need* -- not want, need -- in order to feel sexual arousal, satisfaction, or both. They aren't terms meant to just describe sexual interests, preferences or things people are aroused by. I not only don't see frameworks like -philias or fetishes (which, for the record, are also only about objects or body parts experienced as objects: again, people are using the term fetish way more loosely these days than it was meant to be used) being relevant to you here, it's also not something anyone would know right off the bat after just being exposed to something new that aroused them like this. Additionally, it sounds like you might be assuming this is something pathological, but there's no sound reason to pathologize this or you here.
So far, as far as I can tell, what you have is a new special interest and something you discovered arouses you. We just don't have terms for every single thing that can arouse someone because we don't actually need them: this isn't a disorder or disease, this is just you experiencing arousal anew from one of the zillion things that could possibly be arousing for people. If and when someone finds an interest like this sustains itself over time and they wanted to talk to another person about it, all they'd say is something like, "I'm turned on by farting sometimes."
There are billions of people in the world and absolutely nothing where at least someone, somewhere, doesn't share the same sexual interest. There's a kind of long-running quip in sexology or sexual communities anytime anyone says something like, "No one would like X," where the reply is always, "There's always someone out there who likes X," or some such. That's because those of us who do this work or who have made human sexuality a big part of our lives or knowledge base know that, like I said earlier, human sexuality is massively diverse, as is what people enjoy and like. I assure you, you are not the only person who has been turned on by this. Heck, you're not the only person who's asked about it here at Scarleteen alone in the last month.
Once more, there is no way you or I can know if this interest or excitement is temporary or will be something you have this response to over time. We just can't predict the future based on feelings you've had over a day or two. But I really would try not to worry about this or get too hung up about it, seriously. If it turns out to be something that does continue and something you want to explore with other people in some way, it will be okay, People like all sorts of things many people find surprising, because so many people just have such a narrow view of what sexuality can entail.
The last thing I want to tell you is that it's okay to be a weirdo. Lots of us are weirdos in so many different ways, and when it comes to sexuality, we're either all weirdos or we're all normal because there's no one norm with any of this: once more, human sexuality is just way, way, way too diverse and fluid for there to be a "normal" that makes everything else weird. Get what I mean?
This piece I wrote ages ago may come in handy here:
https://www.scarleteen.com/read/feeling ... -who-cares