Australian Marmite is from New Zealand and is not quite the same as British.

I once had someone do an emergency stop in front of me for no apparent reason in the fast lane of a not very busy motorway. I barely managed to stop in time from high speed.

It can be helpful to see these attacks of grief over the sudden memory of now passed family, friends, and pets in a different way:

Which is how incredibly lucky you are to have had those experiences and memories in your life as opposed to not having had them at all. Which is something to be grateful for.