The conversation between human and AI assistant.
What is it in soil that makes it smell so good after the first rain?
Fascinating. Are there any specific regions or types of soil where petrichor is more prominent?
Petrichor is generally found in all soils, but it's more pronounced in areas with high clay content. The reason for this is that clay has a large surface area to volume ratio, which allows it to hold onto the bacterial and fungal molecules that create the petrichor smell for a longer time.