sugar and yeast mix....smell?

You won't smell anything until you go to change bottles. When you dump the old stuff it'll smell briefly until it all goes down the drain. I don't think it smells all that bad. Kinda smells like bad "rot-gut".
Len
 
It's not supposed to smell while it's hooked up because your hook-up should be really tight. When you open the bottle to dump it, it'll smell like alcohol, which is the by-product of the fermentation.

However, mine smelled one time, and it wasn't the alcohol smell. I used really really old Jell-O (like 5 years expired or something, I found it in the back of a cabinet), and it smelled really bad. I only use fresh ingredients now :)
 
Yes, it smells

Be sure to not let it spill anywhere. I cap the fresh bottle before I leave the kitchen and I cap the old bottle before I return to the kitchen to dump it, just in case I should trip over the cat.

Be sure to never let the tank water siphon down the tubing if the bottle is located below the tank. I set the bottle and bubble counter/scrubber on top of the hood before I change out bottles and leave it there until it is going well.

Even so, with the water pump that powers the reactor in the bigger tank, on occasion it has managed to spill out even above the tank. Even the bubble counter water smells bad. I now change it with every bottle of yeast. Makes me wonder what has gotten into the bubble counter.
 
the cost of fermentation

Doesn't smell in operation, but I find it pretty foul when I dump the old cultures. My wife says it smells like a bakery, but it smells to me like a track shoe.
 
A new bottle is unnecessary (besides, you shouldn't be drinking that much soda anyway). Once you put the top back on it doesn't smell anymore.

As a general rule of thumb... anything that ferments will have a strong odor. Keep your nose away from the lid and you're fine.

And for the rest of the kids out there... if you drink it you won't get drunk, you'll get really sick (like stick-your-head-in-the-toilet sick).
 
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