Are chickens noisy and smelly?

I'd like to keep a couple of laying hens - no cockerel - for the eggs. This would be the next stage of my self-sufficiency drive. I am vegetarian so the chickens themselves are not for consumption.

I have a perfect spot for them - perfect in that I can easily secure it - however, it is right next to the house and some windows.

Somebdy told me that chickens smell and are very noisy.

Any advise please?