I was making some bread and notice how strongly the activated yeast smelled when in the water/sugar. I am planning to use DIY co2 for my tank. Does it stink up the space?? Also, do you think I could head start the plants for a few weeks with co2 and then remove it when I get shrimp? Or does it need to be in longer to have a major effect. Thanks! Sorry if it seems like a dumb question!!!!!