That why a rhetorical tool that personalizes death may work.

Something like "okay, your mother is now dead. And now your wife, and auntie and even your old highschool girlfriend. You watch them all die, bewildered and distraught, but you do nothing until your son dies in front of you, choking on a resporator, pleading in his eyes until the very end."

"You can stop the rest of your family dying right now right now, right way. you can even save your own life, in a way that will also save other peoples mothers, wifes, and sons. Will you?"

depending on the person, one death could also be a party