Cannabis links info and memes

There are only 2 reasons to remove leaves. The first reason is when leaves are stacked on eachother without any space for air going on both sides of the leaves blocking airflow. And the second reason is when a large leaf on top of the plant is blocking a huge amount of light for a big part of the plant growing below this leaf.

They look like caterpillars, they mostly likely eating the plant and then their excrement is going everywhere on on the buds. I would trim the rot away and toss out anything that was right beside it. This sucks but happens. I would not use it in anything like smoking or edibles, its trash now that its been soiled. Good Luck!