i wouldnt tell them that you smoke, my dad told a doctor he smoked many years ago, he has eplilesy(he has seizures when he doesnt take his medicine) and he was a truck driver so oviously you can drive smei when your havign seizures so he applied for disability and they found out that he smoked so theyd dint give it to him, its yuor choice whether you want to tell them or not, but just keep in mind it could come back to bite you in the ass