Hi there Pengu. I have bad news for you, the answer to your question is "yes" . Unfortunately , it's really early in flowering, meaning that if you decide to "fight it" you have to do it for so many weeks and so much time that it will eventually be impossible and the other plants in the grow room will get polinated for sure. Sometimes if it's late enough in flowering you can fight it by using a razor blade to carefully remove them one by one, and you have to check the plant completely several times a day. Here you have time , usually the bannanas will take some time to mature . So what you can do is plan to remove it. Put a black trash bag on top of it and move it, this will protect the pollen sacks from accidentally opening up and contaminating the other plants. I'm sorry growmie, but I hope this helps ! 🚀