Smell after rain?

[dragonflycafe]

We are staying in Rosemary and the stench during and after the storm last night was intense! Still smelling it this morning.
Wondering if that's the smell of septic tanks or sewers overfilling? Asking not to complain, just curious as it was so bad last night we had to close the balcony doors! Thanks!

 

[Kurt]

Where in Rosemary - near Gulf?

Our groundwater has a lot of sulfur which you can often smell after rains. Smells like rotten eggs.