Haze Berry Auto from RQS

This week was shit. From 27 degrees 15h sun, we now had 6 days where from 4 totally rained out,with 2 days no sun. Okey, with so much rain in such a short time, water leaked in to my greenhouse(wood and over 50 years old). Dripping on to some of my buds, resulting in toprot. Not that much, but the last thing you want as a grower is that. Already fixed it by putting a big plastic screen on the inside, now the last 3 days no signs of toprot, although it rained,and my plants were dry. Even it was not that much, for security u cutted enough, will be observing close. Question in my head, would ventilation increase the growth of toprot on rainy and colder days?