m0useanswered grow question 3 years ago it looks like it just beginning the flowering stage, it will get bigger but its hard to tell. The white hairs your talking about I'm assuming are the Pistil's. they will dry up and shrivel if its to dry and or hot, as well as being pollinated.
If the Hemri's from the other plants did not release their pollen, you maybe safe. If you caught them after the fact, all your plants maybe making seeds right now, and them seeds are garbage. hermi plant pollen makes hermi prone kids.
Few things this question is missing, the dairy where the plants are and included reverent info like air temps, grow room lighting, water schedule, feed, RH, PH or what your setup is like. Also the photos are very harsh in terms of colour and quality. its hard to make out whats really happening.
Best of luck