You can buy a 5 gallon brewer for about 100 bucks.
Fish is only one of many ingredients in the formula. Fish hydrolysate does have a faint fish odor, and if left to sit overnight, will smell real bad. We also produce a beneficial anaerobic bacteria that neutralizes the fish smell, leaving behind an apple cider aroma. Also, you have to consider ph instead of just mixing tea with guano...You don't think guano will smell either? You need to do some research instead of just firing questions.