Watch the excellent video made by GSA here to learn about the real effects of the Deccan volcanism on the Cretaceous-Paleogene mass extinction.
The video is based on the recently published “Deep marine records of Deccan Trap volcanism before the Cretaceous–Paleogene (K–Pg) mass extinction” published in Geological Society of America Bulletin (link) with Matthias Sinnesael as first author.