>"The second risk is that the sample isn't completely pure. As with any biological sample, it's hard to avoid contamination. It's likely that other bacteria or organisms might be present in the sample. And so we have secondary risks from other organisms coinciding with the sample. At the moment, this is the biggest risk but I still think it's low. The evaluation of such risks will be dedicated to a different blogpost."

So this article titled "Safety in Algae Home Experiments" completely omits evaluating the "biggest risk".

Unless you're growing black dot mold for citric acid or something, the culture you're _intentionally_ trying to cultivate is generally not going to be the problem - the problem will be what you're cultivating that you _didn't_ intend to cultivate. It's the same with mycoculture. If you do not know what is inside the container you are opening, you may end up with a face full of trichoderma spores.

Stay safe and do not play around with contam, folks. Not even once.