Quoting *Dalton's Momma*:" It's best to quit smoking so you can give baby a healthy environment IMO but that being said a coworker ... [snip!] ... losses and babies born with birth defects. Point is you never know what is going to happen but I would not risk it."
The last statement is true, but just because the baby appears healthy doesnt mean the baby has no problems.
A birth defect does not mean your child is going to have an arm hanging from his cheek, a leg turned backwards, a nose on the side of his ear. Sometimes they are simply not physical. My parents didnt know I was born with hearing loss til I was 4.