Starter smell when stirred

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I'd like to start off by giving everyone on TFL a huge thanks for their friendliness and advice. I'm a novice baker at best, and a community such as this provides an invaluable trove of knowledge for anyone like me :)

I have a novice question about a starter's scent. I created a 2.5-week old starter (rye, 100% hydration) on a 12h feeding schedule that is rising wonderfully and looks correct based on others' photos. However, while the starter smells yeasty/fruity when I'm about to feed it, stirring it up releases a fairly acrid and displeasing odor. I don't detect the paint-thinner/nail-polish-remover scent that supposedly indicates starvation. Instead, it's a yeasty scent mixed with something more sinister (hard to describe). I'm wondering if there might be a problem here since most people in past forum posts seem to find their starter scent relatively attractive, even right before feeding. Could it be that I have incorrectly nurtured the starter?

I baked two small 1-2-3 test loaves with it (one white and one whole wheat), and both turned out fantastic and smelled/tasted like proper sourdough. Unfortunately, I was scared to eat them in case my starter was somehow deadly or I fermented the dough dangerously.

 

It's been 4 hours since my last feed, and I went and stirred it up and stuck my nose right into it. Of all possibilities, "vinegary" seems like just the word I was looking for! It really is difficult to describe unfamiliar smells.

Based on your advice, it sounds like this might a good sign. Thank you very much for the feedback!

if it gets only a 1:1:1 feeding.  I'm sitting here with two very very ripe bananas nearby and keep thinking I'm smelling starter.  So I just found and fed my rye starter.  Thanks.  Maybe I should bake a banana bread too?  

I fed it 1:2:2 today for the first time, and within 5 hours or so, it tripled in size and overflowed the container I was using. I'm happy to have such an active culture, which, looking through older posts, seems like a good sign. I will increase the container size accordingly.

I sense many loaves in the near future :) Thanks for your help, Mini!

I tried a simple 1-2-3 +salt white flour loaf, and it sure seems like the starter is doing its thing. Smells and tastes like sourdough :)

While Loaf (mostly)