Nanners and pollinating surrounding plants

Hi, I found nanners on my plant day 84 and chopped it on day 86 once I learned what they were. I had two other autos next to it. One had started to flower and the other is still in veg. How to tell if the autos have been pollinated? and will these if pollinated give me trouble with other plants I veg in the future?

The nanner plant is drying in another small tent. I cleaned the grow tent with Dettol wipes. I sprayed the plants heavily with water, pots and all in the shower(the soil just a modest amount and then shook dry and returned them to the clean tent.

I have six seeds germinating and will put in this tent when ready. My question is, do I need to worry about the pollinated plants fuckin up the others if so? Thanks for the help in advance.