No-one is to smoke near my child. No exceptions.
Also, there is a 40 minutes rule, which means if someone smokes they can't be near DD for at least 40 minutes.

She's had enough health issues, being prem and so sick when she was born. I don't need someone exposing her to such harmful chemicals.

If I have another baby (fingers crossed) and it's healthy (another fingers crossed), the rules will not be any different to a healthy child than they are to DD.