What has changed?

It has been some time since the fires that decimated a lot of Australia.
The area has changed to what was normal for a bush fire.
The most significant is the smell and it had me stumped for some time.
There is no smell, there is no flies there is no ants. I saw one spider and he  was walking across the ground which is just bizarre for a funnel web.
It hurts that much to see the devastation.................................