the max he can do is ask you to do a check up which would result just fine
He can do more than that. He can decline to issue you with a medical and refer you to HQ in Oklahoma City. With a couple of years drug free and a sympathetic psychiatrist who will write to say it's all behind you now, and the only problems you had were related to the marijuana, then OKC may issue one. If you lie on your form and tell them you haven't had this problem then they will be a lot nastier when they find out. What you really need to ask is whether an airline will hire you.