Yano, you are so right. If the interior of the bus is green, do NOT get on it at busy times. Green buses are so old and worn out they take the AC fuse out to make it go faster and the smell can be bad. If it's yellow inside, the extractor and AC deal with the smell. I HATE green buses and these are the ones they send to Dukhan, after an hour on it, my clothes smell.
I agree with you about allocated seats, they just push the men out so ladies can sit.