Hi pinki. As I mentioned in your other post I have three cats (aged 6, and two 1year olds) and a 9week old baby. My mother and health visitor are obsessed that one of the cats will smother the baby, and apprently the cat would do it accidentally because baby smells nice and milky and is warm and snug. I think it is an old wives tail that the cat would be jealous and do it on purpose.
However, none of my cats pay any mind to the baby atall, apart from sleeping in her moses basket, bounce chair or activity ring - always when she is not in it. When I first came home from hospital one of the cats sniffed around her, looked mightily unimpressed and then went out. The other two paid even less attention than that and as yet, touch wood, have caused no problems atall.
To be on the safe side I bought a cat net to cover the baby's cot, but all that encouraged the cat to do was sit on top of the net, which eventually sank into the cot itself so that was a bit pointless (and dangerous) so I removed it and the cats are banished from her room!