We know. We’ve been there. Your fresh stash is reduced to one last roach. What do you? Desperate times call for desperately searching for that one dry stash you’ve got somewhere in your underwear drawer. However, before you go hunting, you should definitely give it a second thought. That’s because there’s one thing you probably haven’t considered: mold. They’re all around us–not just on our food, our drains, and our pipes, but even on our plants.

Doctors at UC Davis recently discovered five cancer patients suffering from a rare fungal infection that was traced back to a bad batch of medical marijuana–and one of the patients ended up dying as a result of the infection. As you can see, the consequences are deadly. Check out the video above not only to understand the dangers of moldy marijuana, but for ways to preserve your stash.