[video=youtube;gWKpjI5TCEo]http://www.youtube.com/watch?v=gWKpjI5TCEo[/video]
Not when you got a Leak in your place and had Mold Growing in your closet unknowing for at least a month im going be happy to get rid of the smell on plus side landlord gave us 120$ off Our rent for the Issue
Just as an anecdote, in Germany you can enforce a rent reduction of up to 100% depending on the severity and cause of the problem. That's not really a good thing though since at that point there is a very serious health concern, and staying in the apartment would be the stupidest thing you could do at that moment.