To be honest, your husband already knows and not from smelling it on you or seeing you act 'weird'.
He will know because when you go out, unless you take a shedload of Imodium, you'll be needing the loo every ten minutes. He will know because your hair won't be as thick and glossy as it was. He will know because your skin won't look as clear as it did.
Time to admit to him what he already knows and conquer all those 'extras' that boozing brings. Good luck! X