I'd also call it a corpse, not a course:

If you knew there was a dead person next door you might be a little uncomfortable, but could go about your day. If you knew there were 50 dead people next door you would need to get out of there.

The number is relevant, not just the proximity to the closest one.

Ugh I hate that guy

Nobody panics when things go "according to plan." Even if the plan is horrifying! If, tomorrow, I tell you that, like, you'll walk through a graveyard, or a morgue, nobody panics, because it's all "part of the plan". But when I bring ONE corpse to a job interview, well then everyone loses their minds!

I think the corpse acceptability must also account for whether the person expects a corpse to be present.

People are often uncomfortable in graveyards and, for example, would not want to walk through one at night when they would be willing to walk through a field.

The dirt does provide a sort of insulation however, as people would be more willing to walk through a graveyard than through a house that had the same density of corpses in the basement. It's the theoretical accessibility to the corpse that plays a factor here.