AC works, ventilation smells bad

Hello fellow diesel enthusiasts,

I read a post earlier that said the air conditioning smelled like eggs.
The problem I'm having with my Golf IV is that when I switch to normal mode (ECO),...
Then it smells really strange.
If I turn on the air conditioning, it disappears.
The pollen filter has been replaced.
What else could be the reason?

Let's disinfect your vaporizer.

Is that included in a complete air conditioning system maintenance service?
Our dealer is currently offering a climate check for just €49.

The search function and expert articles are your friends.

You must inquire about the inspection details from your dealer; we don't have a crystal ball here for fortune-telling.

Is that included in a complete air conditioning system maintenance service?
At our dealer, we currently have a special offer for a climate check for €49.00.

Your dealer is probably the only one who can tell you exactly what's included.

In the workshop, we charge €38 for disinfection (just as a rough estimate).

"Is it just for disinfection, or does the filling cost extra?"

Scent: Spray Febreze into the heat exchanger.

Rest: Search function and Michael's excellent article.
Okay, I'm ready. Please provide the German text you want me to translate.