How long will pollen stay around

How long can pollen survive in my grow room. I'm going to pollinate a couple of females by just letting my male bust his flowers in the grow room. How long will his pollen stay alive for? Will my next grow have seeds too and will the one after that one too?

you will want to fully scrub / dissinfect your room afterwards. well after every grow really.

will there be pollen in my carbon filter?