Smell of Human Blood.
@Normamsmiley Good point, scene would not necessarily have strong odor, but OTOH ---
Different people have different senses of smell. One person may detect a given odor before others close by can sense it. Another person detects minute quantities of a given odor, when right next to someone else who does not pick it up at all. And a cold, sinus problems, allergies, etc may interfere w a person’s sense of smell.
In this case, there was a several hour time lapse btwn bleeding and discovery of bodies.
Also likely some or a lot of blood was absorbed into bedding, so some odor may have been reduced.
Also likely some (most?) blood became dry, also reducing odor.
Seems possible some ppl may have detected smell of blood at this crime scene, while others barely notIced.
Imo jmo moo