LED bulbs have started flickering and turning extremely dim instantly
Testo:
We have a T8 fixture over our kitchen sink. We have been using LED bulbs compatible with T8 for years, They generally last nearly a year before needing to be replaced, but the most recent one started flickering after only a few months of use and went out completely a week ago. Since then we have replaced that bulb with two others, both of which started flickering almost immediately, and then after about a minute went exceptionally dim. This change is accompanied by a strong chemical odor (I'm assuming it's something happening to the phosporous inside the light).
Is this a common issue that is fairly easy to diagnose and fix on my own or will I need an actual professional to look into it?