The major goal is to track the start time and expiration of
Poison Bomb (192660) and since the duration is fixed to 3 seconds, the expiration could be easily calculated, but obtaining a start time is bit complicating.
I had a go with COMBAT_LOG_EVENT_UNFILTERED and thankfully(?), it does track the damage done via Poison Bomb, but there is still a case where the Poison Bomb is newly applied before the previous one is expired