You loose the crop and have to turn it all into hash or water cure the bud. Just treat it now, your only a week into flowering and it wont hurt anything.
Nuke it now, or it will nuke you and your hard work!
To kill PM:
1) Lower the humidity in your grow to below 50% and keep it there
2) Setup an incoming air filter or ionizer in the room next too the air intake
3) Kill all air flow to the room and put a ziplock bag around any leaves that are effected. Then snip them off so they land in this bag
4) Once done, foliar feed just before lights on with h2o2
Good Luck!
EDIT: Shit, your a month in. I didnt see that. Yeah, thats a little too late. I would cut your losses, clean the area with a disinfectant, water cure what bud you have, then turn it into hash.
Sorry man