I have been making kefir. And it just gets weird from there. The first batch I made smelled like paint thinner and I threw it out. the second one (and on) smelled more like raw bread dough. I got one batch to carbonate. A bunch of batches to curd (made for great cheese to spread on toast). And now I'm getting snot-like kefir, which ironically is the most mild smelling/tasting of all my kefir trials.
I get passed the "omg ... it looks like snot" reaction by mixing it with frozen blueberries. the cold freezes the kefir and makes it more like milkcicles.