I hate bud rot, I have used "Trifecta Crop Control" pricey shit but it does work, I also added fans yes outside, took everything within 18" of the ground off and any leaf that touched another. It also claims to be safe to harvest, I can say it did not change the flavor of the product. I dont like spraying buds either but if its between harvest and no harvest, I choose harvest.
Good luck and like said toss anything with any mold on it. The spoors are not killed by heat/cold, nor can they be filtered out, be safe!