I’m too American and lung-scarred to remember
Due to a history of smoking and multiple bouts of pneumonia I was already fairly sure that my "dying of old age" (which noone truly does) would consist of drowning on fluids from my own damaged lungs one day. Then the drowning on fluids from your own damaged lungs plague came and people decided they'd rather other people die by drowning on fluids from their own damaged lungs than follow simple enhanced hygiene practices for a bit.
Mostly I try to just block that out but it's come back into sharp focus today...