Well, i totally agree with you that problem like this exists in MUMBAI, which is indeed ironical!
Anyways, let me tel you, that its not the MUSLIM factor that comes in.. Its the SMELL factor of the NON-VEG food...
I can eat ANY moving things, BUT, there are the vast mejority who neither eat nor can stand the smell of such foods...
As you said yourself, that Maharastrains also find it difficult, well, let me add, ANY person who cooks NON-VEG will face the same problem.. This problem is NOT based on cast system, its more VEG- Non Veg based.
So, just to add, even I wont be allowed to stay in a society like this(peacefully) for such a petty reason.