Fermentation

I did a project on fermentation!!! So what we were fermenting was yogurt. We first got 1cup of milk 1/3 of organic yogurt and 1 tablespoon of sugar. We mix them together and after that we put it under a heating pad. Then leave it out for 10 hours. It might be smelly cause my was uhhh lol . Then we put it in the fridge. No one wanted to eat it because they though they were going to get sick. P.s I heated everything before I mix them together .